Methyl 7-chloro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylate CAS 338778-41-9
| CAS No. | 338778-41-9 |
| Molecular Formula | C15H10ClNO4 |
| Molecular Weight | 303.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Methyl 7-chloro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylate.
CATO supplies Methyl 7-chloro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylate (CAS 338778-41-9), a certified reference material (molecular formula C15H10ClNO4, MW 303.70 g/mol) for analytical method development and quality control.
Structurally, Methyl 7-chloro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylate (C15H10ClNO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 303.70 g/mol, it falls into the moderately-high-molecular-weight range. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Methyl 7-chloro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylate 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 | C15H10ClNO4 |
| Molecular Weight | 303.70 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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