Azathioprine Impurity 13 CAS 873-25-6
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 873-25-6 |
| Molecular Formula | C4H3Cl3N2 |
| Molecular Weight | 185.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Azathioprine Impurity 13 (CAS 873-25-6) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C4H3Cl3N2. Molecular weight: 185.44 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C4H3Cl3N2 |
| Molecular Weight | 185.44 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Azathioprine Standards
- Azathioprine Impurity 24 (CAS CATO-C4X-146324)
- Azathioprine Impurity 26 (CAS 18753-82-7)
- Azathioprine Impurity 6 (CAS 154-42-7)
- Azathioprine Impurity 8 (CAS 50-66-8)
- Azathioprine EP Impurity C (CAS 4897-25-0)
- Azathioprine EP Impurity D (CAS 6339-54-4)
- Azathioprine Impurity 9 (CAS 1190008-04-8)
- Azathioprine EP Impurity B (CAS 157930-13-7)
Recommended Standards
- 3,4,5-Trichloro-1-methyl-1H-pyrazole (CAS 90445-57-1)
- 2-Bromo-2-methylpropanoyl chloride (CAS 20469-89-0)
- 2-(Trichloromethyl)-1H-imidazole (CAS 163769-73-1)
- Lenalidomide Impurity 25 (CAS 1218910-61-2)
- Medroxyprogesterone Impurity N2 (CAS 77881-13-1)
- 4-Amino-4-oxobut-2-enoic acid (CAS 4452-01-1)
- Tinidazole Impurity 4 (CAS 13230-19-8)
- 1-(Oxan-4-yl)ethan-1-ol (CAS 66956-74-9)
- 4-Amino-5-(4-fluorophenyl)-1-methylpyrrolidin-2-one hydrochloride (CAS 1423032-12-5)
- Semaglutide Impurity 166 (CAS 1395881-03-4)
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