Demeclocycline Hydrochloride EP Impurity D CAS 81181-91-1
Purity >90%In StockPharmacopoeial Impurity Standards
| CAS No. | 81181-91-1 |
| Molecular Formula | C21H20N2O7 |
| Molecular Weight | 412.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Demeclocycline Hydrochloride EP Impurity D (CAS 81181-91-1) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C21H20N2O7. Molecular weight: 412.39 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C21H20N2O7 |
| Molecular Weight | 412.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >90% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 2 |
Related Demeclocycline Standards
- Demeclocycline Impurity 10 (CAS CATO-C4X-160810)
- Demeclocycline EP Impurity E (CAS 4496-85-9)
- Demeclocycline impurity 12 (CAS CATO-C4X-160812)
- Demeclocycline EP Impurity A (CAS 987-02-0)
- Demeclocycline EP Impurity C (CAS 129044-45-7)
- Demeclocycline EP Impurity F (CAS CATO-C4X-16086)
- Demeclocycline EP Impurity G (CAS 22688-73-9)
- Demeclocycline EP Impurity B (CAS 14206-59-8)
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