24,24-Difluoro-25-Hydroxyvitamin D3 CAS 71603-41-3
| CAS No. | 71603-41-3 |
| Molecular Formula | C27H42F2O2 |
| Molecular Weight | 436.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 24,24-Difluoro-25-Hydroxyvitamin D3 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies 24,24-Difluoro-25-Hydroxyvitamin D3 (CAS 71603-41-3), a certified reference material (molecular formula C27H42F2O2, MW 436.62 g/mol) for analytical method development and quality control.
Based on its molecular formula C27H42F2O2, 24,24-Difluoro-25-Hydroxyvitamin D3 contains a steroid core, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 436.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C27H42F2O2 |
| Molecular Weight | 436.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | F-containing |
Related Difluoro Standards
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- 23,23-Difluoro-25-Hydroxyvitamin D3 (CAS 95826-03-2)
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Recommended Standards
- 3β,7α,12α-Trihydroxy-5β-cholanic Acid Methyl Ester (CAS 28050-54-6)
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- Cholic Acid Ethyl Ester (CAS 47676-48-2)
- 5-(1,1-Dimethylethyl)-2-hydroxy-3-(triphenylsilyl)benzaldehyde (CAS 1254097-55-6)
- 5-Chloro-2-methoxy-7-vinylquinoxaline (CAS 2173069-37-7)
- 4-(3-Pyrrolidinylmethyl)morpholine dihydrochloride (CAS 1220033-16-8)
- N-(3-Ethynylphenyl)-4-morpholino-3-(trifluoromethyl)benzamide (CAS 2499499-13-5)
- N-allyl-4-chloro-N-phenylbenzenesulfonamide (CAS 2514-66-1)
- 2-(Difluoromethyl)-5-methoxy-3-methyl-1H-indole (CAS 2149590-55-4)
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- 5,5,6,6,7,7,8,8,9,9,10,10,10-Tridecafluorodecyl acrylate (CAS 451456-30-7)
- 3-Chloro-5-(pyridin-3-yl)isothiazole-4-carbonitrile (CAS 1239741-20-8)
- 5-Acetamido-4-hydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonic acid (CAS 25317-20-8)
- Semaglutide impurity 267 (CAS CATO-C4X-2226267)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com