Methyl 2-chloro-4-methyl-3-oxo-2,3-dihydrothiophene-2-carboxylate CAS 128775-88-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 128775-88-2 |
| Molecular Formula | C7H7ClO3S |
| Molecular Weight | 206.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 2-chloro-4-methyl-3-oxo-2,3-dihydrothiophene-2-carboxylate (CAS 128775-88-2) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C7H7ClO3S. Molecular weight: 206.65 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C7H7ClO3S |
| Molecular Weight | 206.65 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
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- (3-Bromo-benzyl)-(3-pentafluoroethylsulfanylpropyl)-amine (CAS 1208080-40-3)
- Methyl 1-methylcyclopentane-1-carboxylate (CAS 4630-83-5)
- 3-(3-Hydroxypropyl)-3,4-dihydroquinazolin-4-one (CAS 857759-66-1)
- Azetidin-3-yl dimethylcarbamate hydrochloride (CAS 935668-34-1)
- Semaglutide impurity 77 (CAS CATO-C4X-222677)
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