Ethyl 2-amino-4-(4-nitrophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate CAS 939894-10-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 939894-10-7 |
| Molecular Formula | C21H16N2O6S |
| Molecular Weight | 424.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 2-amino-4-(4-nitrophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate (CAS 939894-10-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C21H16N2O6S. Molecular weight: 424.43 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C21H16N2O6S |
| Molecular Weight | 424.43 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Ethyl 2-amino-4-(3-nitrophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate (CAS 939889-05-1)
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Recommended Standards
- Methyl 4-(2-((5-((4-cyanophenoxy)methyl)-1,3,4-oxadiazol-2-yl)thio)acetamido)benzoate (CAS 332127-14-7)
- Argatroban Impurity N6 (CAS 203383-33-9)
- Argatroban Impurity 71 (CAS CATO-C4X-100771)
- 2,2-Dibromo-4,4,4-trifluorobutanoic acid (CAS 1210691-01-2)
- 3-(hydroxymethyl)-3-methylpiperidin-4-ol hydrochloride (CAS 1823252-95-4)
- (2R,5S)-2,5-dimethylpiperazine (CAS 1119702-25-8)
- Methyl 3-(methoxymethyl)-5-sulfamoylbenzoate (CAS 1480474-27-8)
- 2-(5-((2,5-Dimethylbenzyl)thio)-4-ethyl-4H-1,2,4-triazol-3-yl)pyridine (CAS 573948-00-2)
- 3-(4-Ethyl-5-sulfanyl-4H-1,2,4-triazol-3-yl)-1-phenyl-1,4-dihydropyridazin-4-one (CAS 866049-46-9)
- Autoinducing Peptide I trifluoroacetate salt (CAS 200010-29-3)
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