Ethyl 2-amino-4-(2,6-dichlorophenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carboxylate CAS 317840-11-2
| CAS No. | 317840-11-2 |
| Molecular Formula | C18H15Cl2NO5 |
| Molecular Weight | 396.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 2-amino-4-(2,6-dichlorophenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carboxylate (CAS 317840-11-2), molecular formula C18H15Cl2NO5 and molecular weight 396.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Ethyl 2-amino-4-(2,6-dichlorophenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carboxylate (C18H15Cl2NO5) 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 396.22 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).
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-amino-4-(2,6-dichlorophenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-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 | C18H15Cl2NO5 |
| Molecular Weight | 396.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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 |
Related Ethyl Standards
- Methyl 6-amino-5-cyano-2-(2-methoxy-2-oxoethyl)-4-(3-(trifluoromethyl)phenyl)-4H-pyran-3-carboxylate (CAS 865660-06-6)
- (3-Amino-6-(pyridin-3-yl)-4-(trifluoromethyl)thieno[2,3-b]pyridine-2-carbonyl)glycine (CAS 899370-08-2)
- Methyl 3-amino-6-(2H-1,3-benzodioxol-5-yl)-4-(trifluoromethyl)thieno[2,3-b]pyridine-2-carboxylate (CAS 625377-31-3)
- 2-Amino-3-(benzo[d]oxazol-2-yl)-6-methyl-4-nitro-1-pentyl-1,6-dihydro-7H-pyrrolo[2,3-d]pyridazin-7-one (CAS 748784-61-4)
- 6-Amino-2-(2,4-dimethylphenyl)-1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinoline-5-sulfonic acid (CAS 93942-76-8)
- 2-(2-Amino-1H-benzo[d]imidazol-1-yl)-N-benzyl-8-methoxyquinazolin-4-amine (CAS 1346527-98-7)
- 3-Amino-N-(3-methyl-4-((4-(pyridin-3-yl)pyrimidin-2-yl)amino)phenyl)benzamide (CAS 1437315-24-6)
- 6-Amino-1-benzyl-5-{[2-(3,4-dimethoxyphenyl)ethyl]amino}-1,2,3,4-tetrahydropyrimidine-2,4-dione (CAS 554405-18-4)
Recommended Standards
- 4-[4-(3,4-Dichlorophenyl)piperazin-1-yl]-3-nitrobenzoic acid (CAS 478246-62-7)
- tert-Butyl 4-iodo-6-phenylpyridin-3-ylcarbamate (CAS 941271-13-2)
- 3-Ethoxy-5-iodo-4-[(4-methylbenzyl)oxy]benzaldehyde (CAS 443289-53-0)
- N-(3-Chloro-2-fluorophenyl)-6-(3-chloropropoxy)-7-methoxyquinazolin-4-amine (CAS 1807546-70-8)
- 3-Fluoro-5-(pentafluorosulfur)benzoyl chloride (CAS 1240256-92-1)
- 5-Bromo-2-chloro-6-methylpyrimidin-4-amine (CAS 54093-23-1)
- N-Methyl-2,6-dinitro-4-(trifluoromethyl)aniline (CAS 6574-17-0)
- Fenchone (CAS 1195-79-5)
- Ethyl Linoleate (CAS 544-35-4)
- 7,7-Dimethyl-6,7-dihydrobenzofuran-4(5H)-one (CAS 849334-10-7)
- N-(4-chlorobenzyl)-5-propyl-1,3,4-thiadiazol-2-amine (CAS 609823-03-2)
- 2-Fluoro-4-methyl-6-nitrophenol (CAS 2070-43-1)
- Lesinurad Impurity 3 (CAS 1533519-96-8)
- Semaglutide impurity 42 (CAS CATO-C4X-222642)
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