(1R,3S)-5-{2-[(1R,3aS,7aR)-7a-methyl-1-[(2R)-6-methylheptan-2-yl]-octahydro-1H-inden-4-ylidene]ethylidene}-4-methylidenecyclohexane-1,3-diol

• ChemBase ID: 155977
• Molecular Formular: C27H44O2
• Molecular Mass: 400.63706
• Monoisotopic Mass: 400.33413065
• SMILES: C[C@H](CCCC(C)C)[C@H]1CC[C@@H]2[C@@]1(CCC/C/2=C\C=C\1/C[C@H](C[C@@H](C1=C)O)O)C
• Canonical SMILES: CC(CCC[C@H]([C@H]1CC[C@@H]2[C@]1(C)CCC/C/2=C\C=C\1/C[C@@H](O)C[C@@H](C1=C)O)C)C
• InChI: InChI=1S/C27H44O2/c1-18(2)8-6-9-19(3)24-13-14-25-21(10-7-15-27(24,25)5)11-12-22-16-23(28)17-26(29)20(22)4/h11-12,18-19,23-26,28-29H,4,6-10,13-17H2,1-3,5H3/t19-,23-,24-,25+,26+,27-/m1/s1
• InChIKey: OFHCOWSQAMBJIW-HBHUAMBYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: (1R,3S)-5-{2-[(1R,3aS,7aR)-7a-methyl-1-[(2R)-6-methylheptan-2-yl]-octahydro-1H-inden-4-ylidene]ethylidene}-4-methylidenecyclohexane-1,3-diol
• IUPAC Traditional name: (1R,3S)-5-{2-[(1R,3aS,7aR)-7a-methyl-1-[(2R)-6-methylheptan-2-yl]-hexahydro-1H-inden-4-ylidene]ethylidene}-4-methylidenecyclohexane-1,3-diol
• Synonyms: 1α-Hydroxycholecalciferol; Alfacalcidol; 1α-Hydroxyvitamin D3

Database IDs

• CAS Number: 41294-56-8
• EC Number: 255-297-1
• MDL Number: MFCD00868328
• PubChem SID: 162250115; 24850815
• PubChem CID: 5283718

CALCULATED PROPERTIES

• Acid pKa: 14.392874
• H Acceptors: 2
• H Donor: 2
• LogD (pH = 5.5): 5.8218555
• LogD (pH = 7.4): 5.8218555
• Log P: 5.8218555
• Molar Refractivity: 124.6964 cm^3
• Polarizability: 48.829468 Å^3
• Polar Surface Area: 40.46 Å^2
• Rotatable Bonds: 6
• Lipinski's Rule of Five: false

PROPERTIES

Safety Information

• RTECS: VS2851000
• European Hazard Symbols: Highly toxic (T+)
• UN Number: 2811
• German water hazard class: 3
• Hazard Class: 6.1
• Packing Group: 1
• Risk Statements: 26/27/28
• Safety Statements: 28-36/37-45
• GHS Pictograms: GHS06
• GHS Signal Word: Danger
• GHS Hazard statements: H300-H310-H330
• GHS Precautionary statements: P260-P264-P280-P284-P302 + P350-P310
• Personal Protective Equipment: Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
• RID/ADR: UN 2811 6.1/PG 1
• Storage Temperature: -20°C

Product Information

• Purity: ≥97.0% (HPLC)
• Empirical Formula (Hill Notation): C27H44O2

DETAILS

Sigma Aldrich - 17946

Biochem/physiol Actions
Synthetic vitamin D3 analog that is metabolized to 1,25-dihydroxycholecalciferol. Inhibits bone resorption and stimulates bone formation.1 Supresses parathyroid hormone secretion by bovine parathyroid cells.2
Cholecalciferol is an inactive form of vitamin D3 which undergoes various levels of hydroxylation to form active vitamin D3 analogs. 1α-Hydroxyvitamin D3 (alfacalcidol is a synthetic analog that is metabolized to 1,25-dihydroxycholecalciferol, the biologically active form of vitamin D3 in calcium absorption and deposition. 1α,25-Dihydroxyvitamin D3 has widespread effects on cellular differentiation and proliferation, and can modulate immune responsiveness, and central nervous system function. Recent studies suggest that 1α,25-dihydroxyvitamin D3 acts as a chemopreventive agent against several malignancies including cancers of the prostate and colon and shows synergy with other anticancer compounds.