Temozolomide Impurity 19 CAS CATO-C4X-135319
| CAS No. | CATO-C4X-135319 |
| Molecular Formula | C6H9N5O2 |
| Molecular Weight | 183.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO supplies Temozolomide Impurity 19 (CAS CATO-C4X-135319), a pharmacopoeial impurity reference standard (molecular formula C6H9N5O2, MW 183.17 g/mol) used for the identification and quantification of trace impurities in APIs.
Temozolomide Impurity 19 (C6H9N5O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures Temozolomide Impurity 19 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H9N5O2 |
| Molecular Weight | 183.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
Related Temozolomide Standards
- Temozolomide Impurity 3 (CAS 188612-53-5)
- Temozolomide EP Impurity C (CAS 114601-31-9)
- Temozolomide EP Impurity B (CAS 113942-30-6)
- Temozolomide Metabolite-MTIC-d3 (CAS 1185242-69-6)
- Temozolomide-d3 (CAS 208107-14-6)
- Temozolomide Metabolite-MTIC (CAS 1232679-46-7)
- Temozolomide Impurity 4 (CAS 3413-72-7)
- Temozolomide Impurity 17 (CAS CATO-C4X-135317)
Recommended Standards
- 4-Methyl-6-(trifluoromethyl)pyrimidin-2-amine 5734-63-4 8429AB C6H6F3N3 (CAS 5734-63-4)
- 42072-27-5 O,O-Dimethyl acetylthiophosphoramidate Phosphoramidothioic acid, N-acetyl-, O,O-dimethyl ester Phosphoramidothioic acid, acetyl-, O,O-dimethyl ester EINECS 255-646-8 (CAS 42072-27-5)
- Theophylline Impurity 14 (CAS CATO-C4X-182314)
- 6-(Trifluoromethyl)pyridine-3-methanol 6-trifluoromethyl-3-pyridylmethanol [6-(trifluoromethyl)-3-pyridyl]methanol (6-trifluoromethyl-pyridin3-yl)-methanol 5-(hydroxymethyl)-2-(trifluoromethyl)pyridine 3-hydroxymethyl-6-trifluoromethylpyridine [6-(trifluoromethyl)pyridin-3-yl]methanol (6-(trifluoromethyl)pyridin-3-yl)methanol 2-(trifluoromethyl)pyridine-5-methanol (6-trifluoromethyl-pyridin-3-yl)-methanol [6-(trifluoromethyl)-3-pyridinyl]methanol 6-trifluoromethyl-3-pyridinemethanol 386704-04-7 (CAS 386704-04-7)
- Atracurium Impurity 9 (CAS CATO-C4X-18509)
- Finerenone Impurity 167 (CAS CATO-C4X-2880167)
- Doxylamine Impurity N91 (CAS CATO-C1460291)
- 3-(Trifluoromethyl)piperidine-1-sulfonyl chloride (CAS 1484097-79-1)
- 2,3-Dimethyl-4H-benzo[4,5]imidazo[1,2-b]pyrazole (CAS 130436-65-6)
- 4-Bromo-1-(3-chloropyridin-2-yl)-1h-pyrazol-3-amine (CAS 1250758-60-1)
- 8-(Tert-butoxycarbonyl)-1-oxa-2,8-diazaspiro[4.5]Dec-3-ene-3-carboxylic acid (CAS 1820604-75-8)
- 1-(2H-1,3-Benzodioxole-5-carbonyl)-1H-imidazole (CAS 135696-67-2)
- Methyl 3-(3-hydroxyprop-1-yn-1-yl)-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylate (CAS 1428794-87-9)
- Semaglutide impurity 266 (CAS CATO-C4X-2226266)
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 18665070610 / Nicole.chen@cato-chem.com