3-Methyl-2-oxo-2,3-dihydro-1H-pyrido[3,4-b][1,4]oxazine-7-carbonitrile CAS 1956369-57-5
| CAS No. | 1956369-57-5 |
| Molecular Formula | C9H7N3O2 |
| Molecular Weight | 189.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Methyl-2-oxo-2,3-dihydro-1H-pyrido[3,4-b][1,4]oxazine-7-carbonitrile (CAS 1956369-57-5), molecular formula C9H7N3O2 and molecular weight 189.17 g/mol, is a CATO reference standard with documented purity and traceability.
3-Methyl-2-oxo-2,3-dihydro-1H-pyrido[3,4-b][1,4]oxazine-7-carbonitrile (C9H7N3O2) 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. 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.
CATO manufactures 3-Methyl-2-oxo-2,3-dihydro-1H-pyrido[3,4-b][1,4]oxazine-7-carbonitrile 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 | C9H7N3O2 |
| Molecular Weight | 189.17 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 3-Methyl-2-oxo-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine-7-carbonitrile (CAS 1956366-25-8)
- 5-Hydroxyisoquinoline-4-carboxylic acid (CAS 1958100-67-8)
- 5-Cyano-2,3-dihydrobenzofuran-2-carboxylic acid (CAS 194163-38-7)
- 8-Hydroxyisoquinoline-4-carboxylic acid (CAS 1958106-10-9)
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Why CATO?
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