Entacapone impurity 19 CAS CATO-C4X-162919
| CAS No. | CATO-C4X-162919 |
| Molecular Formula | C15H15N3O5 |
| Molecular Weight | 317.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Entacapone impurity 19 (C15H15N3O5) contains a flavonoid core, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Entacapone impurity 19 (CAS CATO-C4X-162919), a pharmacopoeial impurity reference standard (molecular formula C15H15N3O5, MW 317.30 g/mol) used for the identification and quantification of trace impurities in APIs.
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 manufactures Entacapone 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 | C15H15N3O5 |
| Molecular Weight | 317.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Entacapone Standards
- Entacapone Impurity 56 (CAS CATO-C4X-162956)
- Entacapone EP Impurity H (CAS 1150310-15-8)
- Entacapone Impurity 23 (CAS 1185241-19-3)
- Entacapone Impurity 21 (CAS 158693-04-0)
- Entacapone Impurity 22 (CAS 857629-78-8)
- Entacapone Impurity 9 (CAS 146698-91-1)
- Entacapone Impurity 11 (CAS CATO-C4X-162911)
- Entacapone Impurity 10 (CAS CATO-C4X-162910)
Recommended Standards
- 76360-78-6 1,7-Diphenyl-2H-pyrimido[4,5-d][1,3]oxazine-2,4(1H)-dione DTXSID60509781 (CAS 76360-78-6)
- tert-Butyl 6-(difluoromethyl)-5-fluoro-8-hydroxy-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 2159123-11-0)
- tert-Butyl 3-(3-(trifluoromethyl)phenoxy)azetidine-1-carboxylate (CAS 954232-85-0)
- Letrozole Impurity 12 (CAS CATO-C4X-182912)
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- Fospropofol Impurity 5 (CAS CATO-C4X-31515)
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- N-(2-Methoxyphenyl)-4-(3-methyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7-yl)piperazine-1-carboxamide (CAS 1070862-25-7)
- N1,N1-Dimethylcyclopentane-1,2-diamine (CAS 953750-00-0)
- 2-(2-Chloro-4-nitrophenoxy)acetic acid (CAS 5037-04-7)
- N-((2R,3S,E)-1,3-Dihydroxyoctadec-4-en-2-yl)acetamide (CAS 150338-90-2)
- Ethyl 5-chloro-1-(2-nitrophenyl)-1H-pyrazole-4-carboxylate (CAS 121716-35-6)
- 2-(4-(2-Chloro-6-fluorobenzyl)piperazin-1-yl)benzo[d]thiazole (CAS 478077-01-9)
- Liraglutide(13-31)TFA Salt (CAS CATO-C4X-19929)
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 18665070610 / Nicole.chen@cato-chem.com