Estriol Impurity 11 CAS 690996-27-1
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 690996-27-1 |
| Molecular Formula | C27H31BrO3 |
| Molecular Weight | 483.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Estriol Impurity 11 (CAS 690996-27-1) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C27H31BrO3. Molecular weight: 483.44 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C27H31BrO3 |
| Molecular Weight | 483.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Br-containing |
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Recommended Standards
- Methotrexate impurity 53 (CAS CATO-C4X-115453)
- Ethyl 4-methoxy-3-[(E)-N'-{2-[3-(trifluoromethyl)phenoxy]ethoxy}imidamido]thieno[2,3-b]pyridine-2-carboxylate (CAS 341966-72-1)
- Methotrexate impurity 50 (CAS CATO-C4X-115450)
- Leuprorelin EP Impurity D 2*Trifluoroacetic acid (CAS 1926163-25-8 (free base))
- Sulbactam Impurity 41 (CAS CATO-C4X-175641)
- 5-Bromo-4-chloro-2-(methylsulfonyl)pyrimidine (CAS 79091-24-0)
- 1-(4-butoxyphenyl)ethanone (CAS 5736-89-0)
- 2,3-Dihydro-1H-indol-5-amine (CAS 15918-80-6)
- 2-(3-Fluorophenyl)-1,3,2-dioxaborinane (CAS 684648-38-2)
- Glucagon-like peptide 2 (CAS 89750-15-2)
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