2-(((9H-Fluoren-9-yl)methoxy)carbonyl)-7-oxa-2-azaspiro[3.5]nonane-1-carboxylic acid CAS 2137503-11-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 2137503-11-6 |
| Molecular Formula | C23H23NO5 |
| Molecular Weight | 393.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(((9H-Fluoren-9-yl)methoxy)carbonyl)-7-oxa-2-azaspiro[3.5]nonane-1-carboxylic acid (CAS 2137503-11-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C23H23NO5. Molecular weight: 393.43 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C23H23NO5 |
| Molecular Weight | 393.43 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 1 |
Related H Standards
- 5-{[(9H-fluoren-9-yl)methoxy]carbonyl}-2H,4H,5H,6H,7H-pyrazolo[4,3-c]pyridine-3-carboxylic acid (CAS 2091633-90-6)
- 2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(thiophen-2-yl)propanoic acid (CAS 134439-24-0)
- 2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(thiophen-3-yl)propanoic acid (CAS 678991-94-1)
- 3-{[(9h-fluoren-9-ylmethoxy)carbonyl]amino}-3-(thiophen-2-yl)propanoic acid (CAS 282525-12-6)
- 1-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-4-ethylcyclohexane-1-carboxylic acid (CAS 1339220-30-2)
- 2-(1-((((9h-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)cyclohexyl)acetic acid (CAS 1487673-57-3)
- 1-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)cyclooctanecarboxylic acid (CAS 222166-38-3)
- 2-((2-((9H-fluoren-9-yl)methoxy)-2-oxoethyl)amino)-3-cyclopentylpropanoic acid (CAS 1993849-91-4)
Recommended Standards
- 1-Benzyl 6-ethyl (S)-2-((tert-butoxycarbonyl)amino)-4-oxohexanedioate (CAS 250291-82-8)
- 2-(4-Methoxyphenyl)-5-(methylsulfonyl)-4-(phenylsulfonyl)oxazole (CAS 897837-47-7)
- (Z)-Ethyl 4-(2-hydroxy-3-methoxybenzylidene)-2-methyl-5-oxo-1-(p-tolyl)-4,5-dihydro-1H-pyrrole-3-carboxylate (CAS 6134-91-4)
- benzyl 4-amino-6-(dimethylamino)-1,3,5-triazine-2-carboxylate (CAS 1803583-03-0)
- 3-[6-(Acetylamino)-3-pyridinyl]-N-[2-[[2,4-dichloro-3-[[(2-methyl-8-quinolinyl)oxy]methyl]phenyl]methylamino]-2-oxoethyl]-(E)-2-propenamide (CAS 167838-64-4)
- Brexpiprazole Impurity 51 (CAS 79145-59-8)
- 2-(1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl)-N-(2-methoxyphenyl)acetamide (CAS 380569-84-6)
- Methyl 3-amino-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate hydrochloride (CAS 850567-50-9)
- (1S,3R,4R)-3-[(TERT-BUTOXYCARBONYL)AMINO]-4-[(METHYLSULFONYL)OXY]CYCLOHEXANECARBOXYLIC ACID ETHYL ESTER (CAS 365998-97-6)
- Tirzepatide Impurity 45 (CAS CATO-C4X-324045)
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 13829788188 / jacky.chen@cato-chem.com