Spironolactone Impurity 11 CAS 2537956-65-1
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 2537956-65-1 |
| Molecular Formula | C23H30O5 |
| Molecular Weight | 386.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Spironolactone Impurity 11 (CAS 2537956-65-1) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C23H30O5. Molecular weight: 386.48 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C23H30O5 |
| Molecular Weight | 386.48 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
Related Spironolactone Standards
- Spironolactone Impurity 15 (CAS CATO-C4X-134515)
- Spironolactone Impurity 18 (CAS CATO-C4X-134518)
- Spironolactone Impurity 12 (CAS CATO-C4X-134512)
- Spironolactone Impurity 14 (CAS 53866-20-9)
- Spironolactone EP Impurity A (CAS 132458-33-4)
- Spironolactone EP Impurity E (CAS 33784-05-3)
- Spironolactone (CAS 52-01-7)
- Spironolactone D3 (CAS 52-01-7 (Unlabeled))
Recommended Standards
- O1,O4-ditert-butyl O2-ethyl 5,5-dimethylpiperazine-1,2,4-tricarboxylate (CAS 363192-03-4)
- Budesonide Impurity 21 (CAS 85234-64-6)
- Hydrocortisone EP Impurity E (CAS 7753-60-8)
- Lubiprostone Impurity 41 (CAS CATO-C4X-113641)
- Semaglutide Impurity 121 X Sodium Salt (CAS CATO-C4X-2226121)
- 4-Chloro-7-(phenylsulfonyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-7H-pyrrolo[2,3-d]pyrimidine (CAS 2096997-14-5)
- (5-Methyl-1H-tetrazol-1-yl)acetic acid 21743-55-5 7394AD C4H6N4O2 (CAS 21743-55-5)
- (±)12-HEPE (CAS 81187-21-5)
- 4-Methyl-4,5,6,7-tetrahydrobenzo[d]thiazol-2-amine (CAS 803732-49-2)
- Semaglutide (CAS CATO-C4X-2226105)
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