Methyl 2-amino-4-(2-chloro-6-fluorophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate CAS 939894-16-3
| CAS No. | 939894-16-3 |
| Molecular Formula | C20H13ClFNO4S |
| Molecular Weight | 417.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methyl 2-amino-4-(2-chloro-6-fluorophenyl)-5-oxo-4H,5H-thiochromeno[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.
CATO supplies Methyl 2-amino-4-(2-chloro-6-fluorophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate (CAS 939894-16-3), a certified reference material (molecular formula C20H13ClFNO4S, MW 417.84 g/mol) for analytical method development and quality control.
Methyl 2-amino-4-(2-chloro-6-fluorophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate (C20H13ClFNO4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
Physical & Chemical Properties
| Molecular Formula | C20H13ClFNO4S |
| Molecular Weight | 417.84 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 4-(4-Amino-2-fluorophenoxy)-3-chloro-N-(diphenylmethylene)pyridin-2-amine (CAS 1174046-76-4)
- Ethyl 2-amino-1-[trans-4-[(tert-butyldimethylsilyl)oxy]cyclohexyl]-1H-benzo[d]imidazole-5-carboxylate (CAS 1012104-43-6)
- (4-Amino-2-methylpyrimidin-5-yl)methyl trihydrogen diphosphate (CAS 841-01-0)
- 5-Amino-N-[2-(1H-indol-3-yl)ethyl]-7-thia-1,9-diazatetracyclo[9.2.2.0^{2,10}.0^{4,8}]pentadeca-2(10),3,5,8-tetraene-6-carboxamide (CAS 899366-93-9)
- 2-((2-Amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-6-yl)thio)-1-phenylethanone (CAS 93871-94-4)
- 6'-Amino-N-[2-(morpholin-4-yl)-[1,3]oxazolo[4,5-b]pyridin-6-yl]-[2,3'-bipyridine]-6-carboxamide (CAS 1801343-74-7)
- 9,9-Bis(4-amino-3-chlorophenyl)fluorene (CAS 107934-68-9)
- 4-Amino-2'-(2,6-dioxopiperidin-3-yl)-[2,4'-biisoindoline]-1,1',3,3'-tetraone (CAS 1795373-54-4)
Recommended Standards
- 1-(2-Chloro-5-fluorobenzoyl)-4-{[3-(4-fluorophenyl)-1,2,4-oxadiazol-5-yl]methyl}piperidine (CAS 1775467-05-4)
- Afatinib Impurity 32 (CAS 2170273-17-1)
- 1-(2-Chloro-4-fluorobenzoyl)-4-{[3-(4-fluorophenyl)-1,2,4-oxadiazol-5-yl]methyl}piperidine (CAS 1775402-74-8)
- 1,1,1,3,8,10,10,10-Octachlorodecane (CAS 601523-23-3)
- 2,5-Dibromo-4-iodopyridine (CAS 1061357-86-5)
- 2-pyrrolidin-1-ylaniline,2HCl (CAS 1458593-63-9)
- 1-(3-Chloro-2-methylphenyl)-4-hydrazinyl-1H-pyrazolo[3,4-d]pyrimidine (CAS 1416339-78-0)
- 1-(7-Methyl-2-(prop-2-yn-1-ylthio)-[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)ethan-1-one (CAS 886152-14-3)
- 3-Phenylpyrimidine-2,4(1H,3H)-dione (CAS 4260-40-6)
- Rasagiline Impurity 35 (CAS CATO-C4X-191335)
- 1-(4-Fluorophenyl)-3-(2-hydroxyphenyl)propane-1,3-dione (CAS 135276-47-0)
- (2S,3R)-2-(5-(Tert-butoxycarbonyl)-1-methyl-3-oxo-2,5-diazaspiro[3.4]octan-2-yl)-3-hydroxybutanoic acid (CAS 1621435-39-9)
- 5-methoxy-1H-pyrrolo[2,3-c]pyridine-2-carboxylic acid (CAS 17288-36-7)
- Tirzepatide-d7 Ditrifluoroacetate (CAS CATO-CPTD788698)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com