2,3-Dihydro-3-oxo-5-isothiazolecarboxylic Acid CAS 1257444-26-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1257444-26-0 |
| Molecular Formula | C4H3NO3S |
| Molecular Weight | 145.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2,3-Dihydro-3-oxo-5-isothiazolecarboxylic Acid (CAS 1257444-26-0), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C4H3NO3S. Molecular weight: 145.14 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C4H3NO3S |
| Molecular Weight | 145.14 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dihydro Standards
- 2-oxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid (CAS 857982-30-0)
- 4-Oxo-4,5-dihydro-1,2,5-thiadiazole-3-carboxamide (CAS 88947-67-5)
- 5-Oxo-4,5-dihydro-1,3,4-thiadiazole-2-carboxamide (CAS 85072-98-6)
- 2,3-Dihydro-1H-pyrrolo[3,2-b]pyridine-6-carbonitrile (CAS 1194683-74-3)
- 5,6-Dihydro-7,4-(azenometheno)benzofuran (CAS 123292-54-6)
- 1,5-Dihydro-4,7-(azenomethano)pyrrolo[3,4-c]pyridine (CAS 171543-13-8)
- 2,3-Dihydro-1H-pyrrolo[3,4-c]pyridine-6-carbonitrile (CAS 2092731-71-8)
- 6,7-Dihydro-5H-pyrrolo[3,4-b]pyridine-2-carbonitrile (CAS 2091881-44-4)
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- ethyl 1,3,6-trimethyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate (CAS 57411-72-0)
- Cholesterol Impurity 17 (CAS 14214-69-8)
- 59880-97-6 Chemotactic peptide F-Met-Leu-Phe L-Phenylalanine, N-(N-(N-formyl-L-methionyl)-L-leucyl)- N-Formyl-L-methionyl-L-leucyl-L-phenylalanine N-Formyl-Met-Leu-Phe N-Formylmethionine leucyl-phenylalanine fMLF fMLP (misnomer but widely used) (CAS 59880-97-6)
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 13829788188 / jacky.chen@cato-chem.com