<?xml version="1.0" encoding="UTF-8"?>
<metabolite>
  <version>1.0</version>
  <creation_date>2016-09-30 22:48:51 UTC</creation_date>
  <update_date>2020-06-04 18:58:59 UTC</update_date>
  <accession>BMDB0001903</accession>
  <secondary_accessions>
    <accession>BMDB01903</accession>
  </secondary_accessions>
  <name>Calcitriol</name>
  <description>Calcitriol, also known as 1a,25(OH)2D3 or calcitriol-nefro, belongs to the class of organic compounds known as vitamin d and derivatives. Vitamin D and derivatives are compounds containing a secosteroid backbone, usually secoergostane or secocholestane. Thus, calcitriol is considered to be a secosteroid lipid molecule. Calcitriol is a drug which is used to treat vitamin d deficiency or insufficiency, refractory rickets (vitamin d resistant rickets), familial hypophosphatemia and hypoparathyroidism, and in the management of hypocalcemia and renal osteodystrophy in patients with chronic renal failure undergoing dialysis. also used in conjunction with calcium in the management and prevention of primary or corticosteroid-induced osteoporosis. Calcitriol exists as a solid, very hydrophobic, practically insoluble (in water), and relatively neutral molecule. Calcitriol is a potentially toxic compound.</description>
  <synonyms>
    <synonym>(1alpha,3beta,5Z,7E)-9,10-Secocholesta-5,7,10(19)-triene-1,3,25-triol</synonym>
    <synonym>(1S,3R,5Z,7E)-9,10-Secocholesta-5,7,10-triene-1,3,25-triol</synonym>
    <synonym>(5Z,7E)-(1S,3R)-9,10-Secocholesta-5,7,10(19)-triene-1,3,25-triol</synonym>
    <synonym>1,25-DHCC</synonym>
    <synonym>1-alpha-25-Dihydroxyvitamin D3</synonym>
    <synonym>1alpha,25(OH)2D3</synonym>
    <synonym>1alpha,25-Dihydroxycholecalciferol</synonym>
    <synonym>1alpha,25-Dihydroxyvitamin D3</synonym>
    <synonym>5-{2-[1-(5-hydroxy-1,5-dimethyl-hexyl)-7a-methyl-octahydro-inden-4-ylidene]-ethylidene}-4-methylene-cyclohexane-1,3-diol</synonym>
    <synonym>Calcijex</synonym>
    <synonym>Calcitriolum</synonym>
    <synonym>Decostriol</synonym>
    <synonym>Rocaltrol</synonym>
    <synonym>(1S,3R,5Z,7E)-9,10-Seco-5,7,10(19)-cholestatriene-1,3,25-triol</synonym>
    <synonym>(1a,3b,5Z,7E)-9,10-Secocholesta-5,7,10(19)-triene-1,3,25-triol</synonym>
    <synonym>(1Α,3β,5Z,7E)-9,10-secocholesta-5,7,10(19)-triene-1,3,25-triol</synonym>
    <synonym>1-a-25-Dihydroxyvitamin D3</synonym>
    <synonym>1-Α-25-dihydroxyvitamin D3</synonym>
    <synonym>1a,25(OH)2D3</synonym>
    <synonym>1Α,25(OH)2D3</synonym>
    <synonym>1a,25-Dihydroxycholecalciferol</synonym>
    <synonym>1Α,25-dihydroxycholecalciferol</synonym>
    <synonym>1a,25-Dihydroxyvitamin D3</synonym>
    <synonym>1Α,25-dihydroxyvitamin D3</synonym>
    <synonym>(3b,5Z,7E)-9,10-Secocholesta-5,7,10(19)-trienetriol</synonym>
    <synonym>1,25 Dihydroxycholecalciferol</synonym>
    <synonym>1,25-Dihydroxycholecalciferol</synonym>
    <synonym>1,25-Dihydroxyvitamin D</synonym>
    <synonym>1,25-Dihydroxyvitamin D3</synonym>
    <synonym>1-alpha,25-Dihydroxyvitamin D3</synonym>
    <synonym>1a,25-(OH)2D3</synonym>
    <synonym>25-Dihydroxycholecalciferol</synonym>
    <synonym>Dihydroxyvitamin D3</synonym>
    <synonym>Ro 21-5535</synonym>
    <synonym>Silkis</synonym>
    <synonym>Soltriol</synonym>
    <synonym>Topitriol</synonym>
    <synonym>Toptriol</synonym>
    <synonym>1 alpha, 25-Dihydroxy-20-epi-vitamin D3</synonym>
    <synonym>1 alpha,25-Dihydroxycholecalciferol</synonym>
    <synonym>1,25(OH)2-20EPi-D3</synonym>
    <synonym>Bocatriol</synonym>
    <synonym>Calcitriol alphapharm brand</synonym>
    <synonym>Calcitriol kyramed</synonym>
    <synonym>Calcitriol-nefro</synonym>
    <synonym>Hoffmann-la roche brand OF calcitriol</synonym>
    <synonym>KyraMed, calcitriol</synonym>
    <synonym>Tirocal</synonym>
    <synonym>alpha,25-Dihydroxyvitamin D3, 1</synonym>
    <synonym>1,25-Dihydroxy-20-epi-vitamin D3</synonym>
    <synonym>20 Epi 1alpha,25 dihydroxycholecaliferol</synonym>
    <synonym>Abbott brand OF calcitriol</synonym>
    <synonym>Calcitriol galderma brand</synonym>
    <synonym>Calcitriol jenapharm brand</synonym>
    <synonym>Calcitriol leo brand</synonym>
    <synonym>Cryopharma brand OF calcitriol</synonym>
    <synonym>Medice brand OF calcitriol</synonym>
    <synonym>Renatriol</synonym>
    <synonym>Roche brand OF calcitriol</synonym>
    <synonym>1 alpha,25 Dihydroxycholecalciferol</synonym>
    <synonym>1 alpha,25-Dihydroxyvitamin D3</synonym>
    <synonym>20-Epi-1alpha,25-dihydroxycholecaliferol</synonym>
    <synonym>Calcitriol gry brand</synonym>
    <synonym>Calcitriol kyramed brand</synonym>
    <synonym>Calcitriol medice brand</synonym>
    <synonym>Calcitriol nefro</synonym>
    <synonym>Calcitriol renacare brand</synonym>
    <synonym>Calcitriol roche brand</synonym>
    <synonym>D3, 1,25-Dihydroxyvitamin</synonym>
    <synonym>D3, 1,25-Dihydroxy-20-epi-vitamin</synonym>
    <synonym>Galderma brand OF calcitriol</synonym>
    <synonym>Hoffmann la roche brand OF calcitriol</synonym>
    <synonym>KyraMed brand OF calcitriol</synonym>
    <synonym>Leo brand OF calcitriol</synonym>
    <synonym>RenaCare brand OF calcitriol</synonym>
    <synonym>Sitriol</synonym>
    <synonym>1 alpha, 25 Dihydroxy 20 epi vitamin D3</synonym>
    <synonym>1 alpha,25 Dihydroxyvitamin D3</synonym>
    <synonym>1,25 Dihydroxyvitamin D3</synonym>
    <synonym>1,25 Dihydroxy 20 epi vitamin D3</synonym>
    <synonym>Alphapharm brand OF calcitriol</synonym>
    <synonym>Calcitriol abbott brand</synonym>
    <synonym>Calcitriol cryopharma brand</synonym>
    <synonym>CalcitriolNefro</synonym>
    <synonym>D3, 1 alpha,25-Dihydroxyvitamin</synonym>
    <synonym>Gry brand OF calcitriol</synonym>
    <synonym>Jenapharm brand OF calcitriol</synonym>
    <synonym>Osteotriol</synonym>
    <synonym>1a,25-Dihydroxyvitamin D3 / 1a,25-dihydroxycholecalciferol / calcitriol</synonym>
    <synonym>1Α,25-dihydroxyvitamin D3 / 1α,25-dihydroxycholecalciferol / calcitriol</synonym>
    <synonym>Calcitriol</synonym>
  </synonyms>
  <chemical_formula>C27H44O3</chemical_formula>
  <average_molecular_weight>416.6365</average_molecular_weight>
  <monisotopic_moleculate_weight>416.329045274</monisotopic_moleculate_weight>
  <iupac_name>(1R,3S,5Z)-5-{2-[(1R,3aS,4E,7aR)-1-[(2R)-6-hydroxy-6-methylheptan-2-yl]-7a-methyl-octahydro-1H-inden-4-ylidene]ethylidene}-4-methylidenecyclohexane-1,3-diol</iupac_name>
  <traditional_iupac>calcitriol</traditional_iupac>
  <cas_registry_number>32222-06-3</cas_registry_number>
  <smiles>C[C@H](CCCC(C)(C)O)[C@@]1([H])CC[C@@]2([H])\C(CCC[C@]12C)=C\C=C1\C[C@@H](O)C[C@H](O)C1=C</smiles>
  <inchi>InChI=1S/C27H44O3/c1-18(8-6-14-26(3,4)30)23-12-13-24-20(9-7-15-27(23,24)5)10-11-21-16-22(28)17-25(29)19(21)2/h10-11,18,22-25,28-30H,2,6-9,12-17H2,1,3-5H3/b20-10+,21-11-/t18-,22-,23-,24+,25+,27-/m1/s1</inchi>
  <inchikey>GMRQFYUYWCNGIN-NKMMMXOESA-N</inchikey>
  <taxonomy>
    <description> belongs to the class of organic compounds known as vitamin d and derivatives. Vitamin D and derivatives are compounds containing a secosteroid backbone, usually secoergostane or secocholestane.</description>
    <kingdom>Organic compounds</kingdom>
    <super_class>Lipids and lipid-like molecules</super_class>
    <class>Steroids and steroid derivatives</class>
    <sub_class>Vitamin D and derivatives</sub_class>
    <direct_parent>Vitamin D and derivatives</direct_parent>
    <alternative_parents>
      <alternative_parent>Cyclic alcohols and derivatives</alternative_parent>
      <alternative_parent>Hydrocarbon derivatives</alternative_parent>
      <alternative_parent>Secondary alcohols</alternative_parent>
      <alternative_parent>Tertiary alcohols</alternative_parent>
      <alternative_parent>Triterpenoids</alternative_parent>
    </alternative_parents>
    <substituents>
      <substituent>Alcohol</substituent>
      <substituent>Aliphatic homopolycyclic compound</substituent>
      <substituent>Cyclic alcohol</substituent>
      <substituent>Hydrocarbon derivative</substituent>
      <substituent>Organic oxygen compound</substituent>
      <substituent>Organooxygen compound</substituent>
      <substituent>Secondary alcohol</substituent>
      <substituent>Tertiary alcohol</substituent>
      <substituent>Triterpenoid</substituent>
    </substituents>
    <molecular_framework>Aliphatic homopolycyclic compounds</molecular_framework>
    <external_descriptors>
      <external_descriptor>D3 vitamins</external_descriptor>
      <external_descriptor>Steroid hormones</external_descriptor>
      <external_descriptor>Vitamin D3 and derivatives</external_descriptor>
      <external_descriptor>hydroxycalciol</external_descriptor>
      <external_descriptor>triol</external_descriptor>
    </external_descriptors>
  </taxonomy>
  <experimental_properties>
    <state>Solid</state>
    <property>
      <kind>melting_point</kind>
      <value>113 °C</value>
      <source/>
    </property>
  </experimental_properties>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>5.51</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>-4.80</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logp</kind>
      <value>4.35</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_acidic</kind>
      <value>14.39</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_basic</kind>
      <value>-1.3</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>iupac</kind>
      <value>(1R,3S,5Z)-5-{2-[(1R,3aS,4E,7aR)-1-[(2R)-6-hydroxy-6-methylheptan-2-yl]-7a-methyl-octahydro-1H-inden-4-ylidene]ethylidene}-4-methylidenecyclohexane-1,3-diol</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>average_mass</kind>
      <value>416.6365</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>mono_mass</kind>
      <value>416.329045274</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>smiles</kind>
      <value>C[C@H](CCCC(C)(C)O)[C@@]1([H])CC[C@@]2([H])\C(CCC[C@]12C)=C\C=C1\C[C@@H](O)C[C@H](O)C1=C</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>formula</kind>
      <value>C27H44O3</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchi</kind>
      <value>InChI=1S/C27H44O3/c1-18(8-6-14-26(3,4)30)23-12-13-24-20(9-7-15-27(23,24)5)10-11-21-16-22(28)17-25(29)19(21)2/h10-11,18,22-25,28-30H,2,6-9,12-17H2,1,3-5H3/b20-10+,21-11-/t18-,22-,23-,24+,25+,27-/m1/s1</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchikey</kind>
      <value>GMRQFYUYWCNGIN-NKMMMXOESA-N</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polar_surface_area</kind>
      <value>60.69</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>refractivity</kind>
      <value>126.53</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polarizability</kind>
      <value>51.02</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>rotatable_bond_count</kind>
      <value>6</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>acceptor_count</kind>
      <value>3</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>donor_count</kind>
      <value>3</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>physiological_charge</kind>
      <value>0</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>formal_charge</kind>
      <value>0</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>number_of_rings</kind>
      <value>3</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>bioavailability</kind>
      <value>1</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>rule_of_five</kind>
      <value>Yes</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>ghose_filter</kind>
      <value>Yes</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>veber_rule</kind>
      <value>Yes</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>mddr_like_rule</kind>
      <value>Yes</value>
      <source>ChemAxon</source>
    </property>
  </predicted_properties>
  <pathways>
  </pathways>
  <spectra>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>81324</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>81325</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>81326</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>142413</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>142414</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>142415</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2288514</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2288515</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2288516</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2647332</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2647333</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2647334</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>25450</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>38179</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>172771</spectrum_id>
    </spectrum>
  </spectra>
  <normal_concentrations>
    <concentration>
      <biospecimen>Adrenal Medulla</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Bladder</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Epidermis</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Fibroblasts</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Intestine</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Kidney</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Milk</biospecimen>
      <concentration_value>0.00001296 +/- 0.00000288</concentration_value>
      <concentration_units>uM</concentration_units>
      <comment>Raw milk</comment>
      <references>
        <reference>
          <reference_text>Hollis BW, Roos BA, Draper HH, Lambert PW: Vitamin D and its metabolites in human and bovine milk. J Nutr. 1981 Jul;111(7):1240-8. doi: 10.1093/jn/111.7.1240.</reference_text>
          <pubmed_id>6788913</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Ovary</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Pancreas</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Placenta</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Prostate Tissue</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Skeletal Muscle</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Spleen</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Testis</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
  </normal_concentrations>
  <drugbank_id>DB00136</drugbank_id>
  <foodb_id>FDB021822</foodb_id>
  <chemspider_id>4444108</chemspider_id>
  <kegg_id>C01673</kegg_id>
  <pubchem_compound_id>5280453</pubchem_compound_id>
  <pdbe_id/>
  <chebi_id>17823</chebi_id>
  <knapsack_id/>
  <phenol_explorer_compound_id/>
  <meta_cyc_id>CALCITRIOL</meta_cyc_id>
  <bigg_id>2289241</bigg_id>
  <wikipedia_id>Calcitriol</wikipedia_id>
  <metlin_id>6382</metlin_id>
  <synthesis_reference>Chen, Yang-sheng; Zhai, Cui-yun; Ren, Li.  Synthesis of calcitriol.    Zhongguo Xinyao Zazhi  (2005),  14(1),  69-72.</synthesis_reference>
  <general_references>
    <reference>
      <reference_text>Hollis BW, Roos BA, Draper HH, Lambert PW: Vitamin D and its metabolites in human and bovine milk. J Nutr. 1981 Jul;111(7):1240-8. doi: 10.1093/jn/111.7.1240.</reference_text>
      <pubmed_id>6788913</pubmed_id>
    </reference>
  </general_references>
  <protein_associations>
    <protein>
      <protein_accession>BMDBP01912</protein_accession>
      <name>Vitamin D3 receptor</name>
      <uniprot_id>Q28037</uniprot_id>
      <gene_name>VDR</gene_name>
      <protein_type>Enzyme</protein_type>
    </protein>
  </protein_associations>
</metabolite>
