Conjugated Estrogens EP Impurity F CAS 16680-50-5
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 16680-50-5 |
| Molecular Formula | C18H19NaO5S |
| Molecular Weight | 370.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Conjugated Estrogens EP Impurity F (CAS 16680-50-5) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C18H19NaO5S. Molecular weight: 370.40 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C18H19NaO5S |
| Molecular Weight | 370.40 g/mol |
| Purity | >95% |
| 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) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Sulfur Atoms | 1 |
Related Conjugated Standards
- Conjugated Estrogens EP Impurity E (CAS 56086-66-9)
- Conjugated Estrogens EP Impurity G(Stabilzed with up to 40% Tromethamine) (CAS 61612-83-7)
- Conjugated Estrogens EP Impurity C (CAS 16680-49-2)
- Conjugated Estrogens EP Impurity H (CAS 16680-48-1)
- Conjugated Estrogens EP Impurity A (CAS 56050-04-5)
- Conjugated Estrogens Impurity 17 (CAS CATO-C4X-141617)
- Conjugated Linoleic Acid Ethyl Ester, 90% (Mixture of Isomers) (CAS 137142-61-1)
- Conjugated Linoleic Acid Methyl Ester (CAS 1002-79-5)
Recommended Standards
- Nafamostat impurity 98 (CAS CATO-C4X-133298)
- Sulfadiazine Impurity 17 (CAS 450365-21-6)
- Cefotiam Impurity 4 (CAS 1628441-07-5)
- Lamivudine Impurity 24 (CAS CATO-C4X-119424)
- CAS 1427177-23-8 (CAS 1427177-23-8)
- 3-Chloro-N-ethyl-5-fluorobenzamide (CAS 1880759-03-4)
- Methyl 2-(4-(aminomethyl)phenoxy)propanoate (CAS 1304316-41-3)
- (S)-N-(2-(2-Cyanopyrrolidin-1-yl)-2-oxoethyl)benzamide (CAS 919103-21-2)
- (2-Chloro-thiazol-5-ylmethyl)-methyl-amine (CAS 120740-06-9)
- [α-Glu](Side Chain)-Semaglutide (CAS CATO-C4X-2226159)
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