Conjugated Estrogens EP Impurity E CAS 56086-66-9
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 56086-66-9 |
| Molecular Formula | C18H19NaO5S |
| Molecular Weight | 370.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Conjugated Estrogens EP Impurity E (CAS 56086-66-9) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C18H19NaO5S. Molecular weight: 370.40 g/mol. COA included with every batch.
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.) | 1973 |
| Sulfur Atoms | 1 |
Related Conjugated Standards
- Conjugated Estrogens EP Impurity F (CAS 16680-50-5)
- 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)
- Cefotiam Impurity 4 (CAS 1628441-07-5)
- Cefotiam Impurity 1 (CAS 775233-43-7)
- LCZ-696 Impurity 9 calcium salt (CAS 3081732-57-9)
- Sulfadimethoxine Impurity 13 (CAS CATO-C4X-150413)
- 1-[(2-Chloro-6-fluorobenzyl)sulfonyl]piperidine-4-carboxylic acid (CAS 1858256-24-2)
- 4-ethyl-4-methylazepane (CAS 1314907-68-0)
- Oxiracetam (CAS 62613-82-5)
- Ethyl 4-(5-methylfuran-2-yl)-2,4-dioxobutanoate (CAS 893643-38-4)
- Des-Gln19-Tirzepatide (CAS CATO-CPTD788954)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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