Trimethoprim EP Impurity G CAS 78025-68-0
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 78025-68-0 |
| Molecular Formula | C15H20N4O3 |
| Molecular Weight | 304.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Trimethoprim EP Impurity G (CAS 78025-68-0) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C15H20N4O3. Molecular weight: 304.34 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C15H20N4O3 |
| Molecular Weight | 304.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 4 |
Related Trimethoprim Standards
- Trimethoprim EP Impurity A (CAS 213745-86-9)
- Trimethoprim Impurity 12 (CAS 92653-78-6)
- Trimethoprim EP Impurity B (CAS 30806-86-1)
- Trimethoprim N-Oxide 1 (CAS 27653-68-5)
- Trimethoprim N-Oxide 3 (CAS 27653-67-4)
- Trimethoprim EP Impurity C (CAS 29606-06-2)
- Trimethoprim-d9 (CAS 1189460-62-5)
- Trimethoprim-d3 (CAS 1189923-38-3)
Recommended Standards
- Guaifenesin EP Impurity D (CAS 16929-60-5)
- Avibactam impurity 107 (CAS CATO-C4X-1348107)
- Ilaprazole Impurity 14 (CAS CATO-C4X-113014)
- Brivaracetam Impurity 42 (CAS 2101641-92-1)
- Baloxavir Marboxil Impurity 186 (CAS CATO-C4X-2108186)
- 1-(1-Methylazetidin-3-yl)ethan-1-ol (CAS 1313738-61-2)
- 4-(Aminomethyl)-N,N,4-trimethylcyclohexan-1-amine (CAS 1519700-98-1)
- N-methyl-1-(1-phenylpyrrolidin-3-yl)methanamine (CAS 915921-18-5)
- 1-(Ethoxymethyl)cyclobutane-1-carbonitrile (CAS 1387563-19-0)
- Semaglutide impurity 274 (CAS CATO-C4X-2226274)
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