17-Methyl-5a-androstane-3b,17b-diol-d5 CAS 853904-65-1
| CAS No. | 853904-65-1 |
| Molecular Formula | - |
| Molecular Weight | 311.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 17-Methyl-5a-androstane-3b,17b-diol-d5.
17-Methyl-5a-androstane-3b,17b-diol-d5 (CAS 853904-65-1), molecular formula C20H29D5O2 and molecular weight 311.51 g/mol, is a CATO reference standard with documented purity and traceability.
17-Methyl-5a-androstane-3b,17b-diol-d5 (C20H29D5O2) contains deuterium isotope labeling, a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 17-Methyl-5a-androstane-3b,17b-diol-d5 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.
Physical & Chemical Properties
| Molecular Formula | C20H29D5O2 |
| Molecular Weight | 311.51 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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 |
| Degree of Unsaturation (DBE) | 6.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
Recommended Standards
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- 6-Chloro-2-(cyclopropylamino)-5-iodopyrimidin-4(3H)-one (CAS 1706432-26-9)
- 2,6-Dichloro-4-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803712-48-2)
- 4-(6-Fluoropyridin-3-yl)benzaldehyde (CAS 1246094-09-6)
- 1-Cyclopropyl-1-(3,5-difluorophenyl)ethan-1-ol (CAS 1343839-92-8)
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- 1-Amino-2-methylpropane-2-thiol (CAS 7684-18-6)
- 2-(3-(Ethoxycarbonyl)-6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-9-yl)acetic acid (CAS 64405-40-9)
- 2-(4-Benzylpiperazin-1-yl)nicotinaldehyde (CAS 885949-58-6)
- 3-Amino-N-(2-fluorophenyl)-6-methyl-4-(trifluoromethyl)-5,6,7,8-tetrahydrothieno[2,3-b]quinoline-2-carboxamide (CAS 664999-31-9)
- methyl 1-(2,2-difluoroethyl)piperidine-4-carboxylate (CAS 1245824-01-4)
- Semaglutide-d8 Tetratrifluoroacetate (CAS CATO-C4X-222617)
Why CATO?
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