Methyl 2-amino-4-(2-chlorophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate CAS 939894-13-0
| CAS No. | 939894-13-0 |
| Molecular Formula | C20H14ClNO4S |
| Molecular Weight | 399.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methyl 2-amino-4-(2-chlorophenyl)-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-chlorophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate (CAS 939894-13-0), a certified reference material (molecular formula C20H14ClNO4S, MW 399.85 g/mol) for analytical method development and quality control.
Methyl 2-amino-4-(2-chlorophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate (C20H14ClNO4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 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. 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.
Physical & Chemical Properties
| Molecular Formula | C20H14ClNO4S |
| Molecular Weight | 399.85 g/mol |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
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