Oxytetracycline EP Impurity E CAS 18751-99-0
Purity >80%In StockPharmacopoeial Impurity Standards
| CAS No. | 18751-99-0 |
| Molecular Formula | C22H22N2O8 |
| Molecular Weight | 442.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
High-purity Oxytetracycline EP Impurity E (CAS 18751-99-0) pharmacopoeial impurity standards reference standard. Molecular formula: C22H22N2O8. Molecular weight: 442.42 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C22H22N2O8 |
| Molecular Weight | 442.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >80% |
| 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.) | 1962 |
| Nitrogen Atoms | 2 |
Related Oxytetracycline Standards
- Oxytetracycline EP Impurity D (CAS 18695-01-7)
- Oxytetracycline EP impurity F(Anhydrooxytetracycline) (CAS 4660-26-8)
- Oxytetracycline EP Impurity B (CAS 60-54-8)
- Oxytetracycline impurity 9 (CAS CATO-C4X-20139)
- Oxytetracycline EP Impurity C (CAS 7647-65-6)
- Oxytetracycline Hemicalcium Salt (CAS 15251-48-6)
- Oxytetracycline EP Impurity A (CAS 14206-58-7)
- Oxytetracycline-d6 (CAS CATO-CCAD303668)
Recommended Standards
- Sodium Cromoglicate Impurity 25 (CAS 40786-63-8)
- Doxycycline EP Impurity B (CAS CATO-C4X-19312)
- Tetracycline Impurity 8 (CAS CATO-C4X-23318)
- Riboflavin lmpurity 20 (CAS 57609-95-7)
- Rivaroxaban Impurity 155 (CAS CATO-C4X-1090155)
- Methyl 5-acetyl-2-methylbenzoate (CAS 1200372-00-4)
- (2S,3R,4S)-Hexane-1,2,3,4,6-pentaol (CAS 25029-33-8)
- (3-(4-Bromophenyl)-1,2,4-oxadiazol-5-yl)methanol (CAS 1342560-61-5)
- Decanenitrile (CAS 1975-78-6)
- Tirzepatide Impurity 61 (CAS CATO-C4X-324061)
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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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com