Ethyl (8-amino-3-(3,4,5-trimethoxyphenyl)pyrido[2,3-b]pyrazin-6-yl)carbamate CAS 28642-77-5
| CAS No. | 28642-77-5 |
| Molecular Formula | C19H20N5O5 |
| Molecular Weight | 398.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ethyl (8-amino-3-(3,4,5-trimethoxyphenyl)pyrido[2,3-b]pyrazin-6-yl)carbamate (CAS 28642-77-5), a certified reference material (molecular formula C19H20N5O5, MW 398.39 g/mol) for analytical method development and quality control.
Structurally, Ethyl (8-amino-3-(3,4,5-trimethoxyphenyl)pyrido[2,3-b]pyrazin-6-yl)carbamate (C19H20N5O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. 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 398.39 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Ethyl (8-amino-3-(3,4,5-trimethoxyphenyl)pyrido[2,3-b]pyrazin-6-yl)carbamate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C19H20N5O5 |
| Molecular Weight | 398.39 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) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 5 |
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