9-cis-Retinyl Stearate-d5 CAS 1331643-11-8
| CAS No. | 1331643-11-8 |
| Molecular Formula | - |
| Molecular Weight | 557.94 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 9-cis-Retinyl Stearate-d5.
9-cis-Retinyl Stearate-d5 (CAS 1331643-11-8), molecular formula C38H59D5O2 and molecular weight 557.94 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 9-cis-Retinyl Stearate-d5 (C38H59D5O2) contains deuterium isotope labeling, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 9.5, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 557.94 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 9-cis-Retinyl Stearate-d5 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C38H59D5O2 |
| Molecular Weight | 557.94 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
Related cis Standards
Recommended Standards
- 2,2'-(2,5-Dibromo-1,4-phenylene)bis(3-bromothiophene) (CAS 1217503-06-4)
- 1,1'-((6-Chloro-1,3,5-triazine-2,4-diyl)bis(azanediyl))bis(anthracene-9,10-dione) (CAS 17612-57-6)
- Lenalidomide Impurity 66 (CAS CATO-C4X-190366)
- Avanafil Impurity 156 (CAS CATO-C4X-1118156)
- 9-(3,5-Di(triphenylen-2-yl)phenyl)-9H-carbazole (CAS 1498411-20-3)
- 2-(2-Methoxyethoxy)-3-nitroimidazo[1,2-a]pyridine (CAS 62194-84-7)
- 1-(3,4-Dimethoxyphenyl)-3-((4-isopropylphenyl)amino)propan-1-one (CAS 883793-71-3)
- (R)-3-(5-bromo-2-chlorophenyl)-2-((tert-butoxycarbonyl)amino)propanoic acid (CAS 794593-67-2)
- 2-Methyl-6-(4-methylphenyl)-4-(3,4,5-trimethoxyphenyl)pyridine-3-carboxamide (CAS 866018-29-3)
- 6-Chloro-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-d]pyrimidine (CAS 1614233-64-5)
- (2E)-3-{[4-(phenylamino)phenyl]amino}-2-(1H-1,2,3,4-tetrazol-5-yl)prop-2-enenitrile (CAS 683799-78-2)
- Methimazole (CAS 60-56-0)
- Chloro(dimethyl)octylsilane (CAS 18162-84-0)
- [a-Glu](Side chain transposition)- Semaglutide (CAS CATO-C4X-2226111)
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