Ethyl 2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylate CAS 68301-89-3
| CAS No. | 68301-89-3 |
| Molecular Formula | C16H13NO4 |
| Molecular Weight | 283.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ethyl 2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylate is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Ethyl 2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylate (CAS 68301-89-3), molecular formula C16H13NO4 and molecular weight 283.28 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Ethyl 2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 283.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Ethyl 2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylate 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 | C16H13NO4 |
| Molecular Weight | 283.28 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
Recommended Standards
- Ethyl 2,4-diethoxy-5-nitrobenzoate (CAS 59036-73-6)
- Ethyl 3-(4-(1H-pyrrol-1-yl)phenyl)-1,2,4-oxadiazole-5-carboxylate (CAS 884982-47-2)
- Ethyl 11-oxo-10,11-dihydrodibenzo[b,f][1,4]oxazepine-8-carboxylate (CAS 81679-41-6)
- Ethyl 4,5-diethoxy-2-nitrobenzoate (CAS 460750-26-9)
- 2-(2,3,4,6-Tetra-O-acetyl-beta-D-glucopyranosyl)-2-thiopseudourea hydrobromide (CAS 40591-65-9)
- Ethyl 6-bromobenzo[d][1,3]dioxole-5-carboxylate (CAS 86449-39-0)
- 8-Bromo-6-chloro-2-cyclopropylimidazo[1,2-b]pyridazine (CAS 1298031-95-4)
- Dotinurad Impurity 159 (CAS CATO-C4X-2494159)
- tert-Butyldimethyl(2-nitro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyloxy)silane (CAS 1452556-16-9)
- 3-((5-Amino-1,3,4-thiadiazol-2-yl)thio)-N-(4-methoxyphenyl)propanamide (CAS 889947-81-3)
- (R)-2,2,2-trifluoro-1-(4-methyl-3-(trifluoromethyl)phenyl)ethan-1-amine (CAS 1212931-97-9)
- (4-Bromo-2-fluorophenyl)hydrazine (CAS 299440-17-8)
- 1-methyl-1H-imidazo[4,5-c]pyridine-7-carboxylic acid hydrochloride (CAS 1989672-50-5)
- Insulin Degludec Impurity 14 (CAS CATO-C4X-215714)
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