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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2006-03-10 10:07:06 UTC
Update Date2022-03-07 02:49:11 UTC
HMDB IDHMDB0001903
Secondary Accession Numbers
  • HMDB01903
Metabolite Identification
Common NameCalcitriol
DescriptionCalcitriol, also known as rocaltrol or 1a,25(OH)2D3, 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 very hydrophobic molecule, practically insoluble (in water), and relatively neutral. Calcitriol is a potentially toxic compound.
Structure
Thumb
Synonyms
Chemical FormulaC27H44O3
Average Molecular Weight416.6365
Monoisotopic Molecular Weight416.329045274
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
Traditional Namecalcitriol
CAS Registry Number32222-06-3
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
InChI Identifier
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 KeyGMRQFYUYWCNGIN-NKMMMXOESA-N
Chemical 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.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
Sub ClassVitamin D and derivatives
Direct ParentVitamin D and derivatives
Alternative Parents
Substituents
  • Triterpenoid
  • Tertiary alcohol
  • Cyclic alcohol
  • Secondary alcohol
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organooxygen compound
  • Alcohol
  • Aliphatic homopolycyclic compound
Molecular FrameworkAliphatic homopolycyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
Biological locationSource
ProcessNot Available
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point113 °CNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane (predicted from logP)
  • Mitochondria
Biospecimen Locations
  • Blood
  • Feces
Tissue Locations
  • Adrenal Medulla
  • Bladder
  • Epidermis
  • Fibroblasts
  • Intestine
  • Kidney
  • Ovary
  • Pancreas
  • Placenta
  • Prostate
  • Skeletal Muscle
  • Spleen
  • Testis
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.000086 (0.000029-0.00016) uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified0.000074 (0.000052-0.000096) uMAdult (>18 years old)BothNormal details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
FecesDetected but not QuantifiedNot QuantifiedNewborn (0-30 days old)Not Specified
Premature neonates
details
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB00136
Phenol Explorer Compound IDNot Available
FooDB IDFDB021822
KNApSAcK IDNot Available
Chemspider ID4444108
KEGG Compound IDC01673
BioCyc IDCALCITRIOL
BiGG ID2289241
Wikipedia LinkCalcitriol
METLIN ID6382
PubChem Compound5280453
PDB IDNot Available
ChEBI ID17823
Food Biomarker OntologyNot Available
VMH ID1A25DHVITD3
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceChen, Yang-sheng; Zhai, Cui-yun; Ren, Li. Synthesis of calcitriol. Zhongguo Xinyao Zazhi (2005), 14(1), 69-72.
Material Safety Data Sheet (MSDS)Not Available
General References

Enzymes

General function:
Involved in monooxygenase activity
Specific function:
Catalyzes the conversion of 25-hydroxyvitamin D3 (25(OH)D) to 1-alpha,25-dihydroxyvitamin D3 (1,25(OH)2D) plays an important role in normal bone growth, calcium metabolism, and tissue differentiation.
Gene Name:
CYP27B1
Uniprot ID:
O15528
Molecular weight:
56503.475
Reactions
Calcidiol + NADPH + Oxygen → Calcitriol + NADP + Waterdetails
Calcidiol + Oxygen + NADPH + Hydrogen Ion → Calcitriol + NADP + Waterdetails
General function:
Involved in sequence-specific DNA binding transcription factor activity
Specific function:
Nuclear hormone receptor. Transcription factor that mediates the action of vitamin D3 by controlling the expression of hormone sensitive genes. Regulates transcription of hormone sensitive genes via its association with the WINAC complex, a chromatin-remodeling complex. Recruited to promoters via its interaction with the WINAC complex subunit BAZ1B/WSTF, which mediates the interaction with acetylated histones, an essential step for VDR-promoter association. Plays a central role in calcium homeostasis
Gene Name:
VDR
Uniprot ID:
P11473
Molecular weight:
48288.6
General function:
Involved in monooxygenase activity
Specific function:
Has a role in maintaining calcium homeostasis. Catalyzes the NADPH-dependent 24-hydroxylation of calcidiol (25-hydroxyvitamin D(3)) and calcitriol (1-alpha,25-dihydroxyvitamin D(3)). The enzyme can perform up to 6 rounds of hydroxylation of calcitriol leading to calcitroic acid. It also shows 23-hydroxylating activity leading to 1-alpha,25-dihydroxyvitamin D(3)-26,23-lactone as end product.
Gene Name:
CYP24A1
Uniprot ID:
Q07973
Molecular weight:
58874.695
Reactions
Calcitriol + NADPH + Oxygen → 24-Hydroxycalcitriol + NADP + Waterdetails
Calcitriol + NADPH + Hydrogen Ion + Oxygen → 24-Hydroxycalcitriol + NADP + Waterdetails