Isothiazole Impurity 1 CAS 252004-30-1
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 252004-30-1 |
| Molecular Formula | C11H9N3O4S |
| Molecular Weight | 279.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Isothiazole Impurity 1 (CAS 252004-30-1) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C11H9N3O4S. Molecular weight: 279.27 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C11H9N3O4S |
| Molecular Weight | 279.27 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Isothiazole Standards
- Isothiazole Impurity 3 (CAS 252004-29-8)
- Ethyl isothiazole-3-carboxylate 1,1-dioxide (CAS 1823946-00-4)
- Isothiazole-4-sulfonyl chloride (CAS 88982-55-2)
- Isothiazole-5-sulfonyl chloride (CAS 362658-19-3)
- Isothiazole-4,5-dicarboxylic acid (CAS 66882-70-0)
- Isothiazole-3,4,5-tricarbonitrile (CAS 857958-14-6)
- Ethyl isothiazole-3-carboxylate (CAS 23244-32-8)
- Methyl isothiazole-3-carboxylate (CAS 1001907-72-7)
Recommended Standards
- Cephacetrile Impurity 3 (CAS CATO-C4X-23113)
- (S)-1-tert-Butyl 2-ethyl 4,4-difluoropyrrolidine-1,2-dicarboxylate (CAS 1001853-59-3)
- Flumazenil Impurity 20 (CAS CATO-C4X-143220)
- Lasmiditan Impurity 56 (CAS CATO-C4X-247856)
- Lincomycin N-Oxide Impurity (CAS CATO-C4X-134214)
- N-Hydroxy-2-Naphthalen-2-Yl-Acetamidine (CAS 422564-76-9)
- 5-(2-Aminoethyl)pyrimidin-4-amine (CAS 291545-99-8)
- 1-(Phenylethynyl)cyclohexanol (CAS 20109-09-5)
- 1,4-Dichloro-2-ethynylbenzene (CAS 38417-89-9)
- Semaglutide Impurity 146 (CAS 2645421-68-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com