Ethyl (8-amino-3-(4-chlorophenyl)pyrido[2,3-b]pyrazin-6-yl)carbamate CAS 28642-75-3
| CAS No. | 28642-75-3 |
| Molecular Formula | C16H13ClN5O2 |
| Molecular Weight | 342.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Ethyl (8-amino-3-(4-chlorophenyl)pyrido[2,3-b]pyrazin-6-yl)carbamate (C16H13ClN5O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.5, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 342.76 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Ethyl (8-amino-3-(4-chlorophenyl)pyrido[2,3-b]pyrazin-6-yl)carbamate (CAS 28642-75-3), molecular formula C16H13ClN5O2 and molecular weight 342.76 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C16H13ClN5O2 |
| Molecular Weight | 342.76 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Ethyl Standards
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Recommended Standards
- Ethyl (8-((4-chlorophenyl)amino)pyrido[2,3-b]pyrazin-6-yl)carbamate (CAS 19270-42-9)
- N-(2-Chlorophenyl)-2-hydrazinyl-5-nitrobenzene-1-sulfonamide (CAS 328028-43-9)
- Midazolam Impurity 32 (CAS CATO-C4X-150932)
- N-(3-Chlorophenyl)-4-hydrazinyl-3-nitrobenzene-1-sulfonamide (CAS 327092-54-6)
- [1-(2,2,2-trifluoroethyl)-1H-pyrazol-3-yl]methylamine,HCl (CAS 1432031-03-2)
- 1-(Piperidin-1-yl)anthracene-9,10-dione (CAS 4946-83-2)
- 1-(4-Amino-5-nitropyrimidin-2-yl)-4-phenethylpiperidine-3,5-dione (CAS 1286697-63-9)
- (5,7-Dimethyl-1H-benzoimidazol-2-yl)-acetic acid (CAS 883549-88-0)
- 3-Fluoro-5-methoxy-2-nitrobenzonitrile (CAS 2167773-78-4)
- ethyl 2-chloro-2-[(2,6-difluorobenzoyl)amino]-3,3,3-trifluoropropanoate (CAS 329182-45-8)
- 6-Fluoro-N-(1-methoxypropan-2-yl)pyridin-2-amine (CAS 1249748-69-3)
- Trans-3-methyl-4-tosyltetrahydrofuran (CAS 89478-94-4)
- (Z)-N-(2-Chlorophenyl)-N'-hydroxy-3-nitrobenzene-1-carboximidamide (CAS 866049-31-2)
- (2S)-2-amino-4-(hydroxymethylphosphinyl)butanoyl-L-alanyl-L-alanine (2S)-2-amino-4-[hydroxy(methyl)phosphinoyl]butyryl-L-alanyl-L-alanine 2-Amino-4-(methylphosphino)butyrylalanylalanine 35597-43-4 Antibiotic SF 1293 Bialaphos CHEBI:3088 L-phosphinothricyl-L-alanyl-L-alanine N-{(2S)-2-amino-4-[hydroxy(methyl)phosphoryl]butanoyl}-L-alanyl-L-alanine PTT Phosphinothricylalanylalanine bilanafos gamma-(Hydroxymethylphosphinyl)-L-alpha-aminobutyryl-L-alanyl-L-alanine phosphinothricin tripeptide (CAS 35597-43-4)
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