4-Keto-9-cis Retinoic acid methyl ester CAS 163955-59-7
| CAS No. | 163955-59-7 |
| Molecular Formula | C21H28O3 |
| Molecular Weight | 328.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Keto-9-cis Retinoic acid methyl ester (CAS 163955-59-7) is a high-purity analytical reference standard with the molecular formula C21H28O3 and a molecular weight of 328.45 g/mol.
Based on its molecular formula C21H28O3, 4-Keto-9-cis Retinoic acid methyl ester contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 328.45 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), 4-Keto-9-cis Retinoic acid methyl ester 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 | C21H28O3 |
| Molecular Weight | 328.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
Related Keto Standards
- 4-Keto 13-cis-Retinoic Acid Methyl Ester (CAS 71748-57-7)
- 15-keto Prostaglandin A1 (CAS 61600-67-7)
- 4-Keto 9-cis Retinoic Acid-d3 (CAS 1185241-31-9)
- 7-Keto Naturalean (CAS 1449-61-2)
- 15-Keto-prostaglandin E2 (CAS 26441-05-4)
- 15-Keto Prostaglandin E0 (Mixture of Tautomeric Isomers) (CAS CATO-C4X-113639)
- 3-Keto-dihydrosphingosinehcl (CAS 18944-28-0)
- 15-Keto Prostaglandin E0 (CAS 5094-14-4)
Recommended Standards
- N1,N4-dicyclohexylterephthalamide (CAS 15088-29-6)
- (3S,4AS,6aR,11aS,11bS)-methyl 3-hydroxy-10,11b-dimethyl-2,3,4,4a,5,6,6a,11,11a,11b-decahydro-1H-benzo[a]fluorene-9-carboxylate (CAS 16996-09-1)
- 6-Hydroxy Levonorgestrel (CAS 1458616-80-2)
- 1,5-DIHYDROXY-2,2,4,4-TETRACHLORO-3-PENTANONE (CAS 17558-87-1)
- 4,4',4''-Boranetriyltribenzaldehyde (CAS 2099714-36-8)
- Hexadecanamide (CAS 629-54-9)
- 2-(1,5-dimethyl-1H-indol-3-yl)ethan-1-amine hydrochloride (CAS 172896-29-6)
- 4-Fluoro-N-(4-(pyrrolidin-1-yl)phenyl)benzamide (CAS 251097-14-0)
- Fluoromethanesulfonyl Chloride (CAS 42497-69-8)
- 7-Chloro-1-(6-chloropyridin-3-yl)heptan-1-one (CAS 914203-41-1)
- 5-Hydroxypyrazine-2-carbonitrile (CAS 134510-05-7)
- 2-methyl-1,1,3-trioxo-2,3-dihydro-1$l^{6},2-benzothiazole-6-carboxylic acid (CAS 1038706-82-9)
- 2-(4-Chloro-3-methylphenyl)acetic acid (CAS 81720-78-7)
- ([D?]Val?·1?)-C-Peptide (human) (CAS 1802078-41-6)
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