4-Chloroisothiazolo[5,4-d]pyrimidine CAS 1483065-60-6
| CAS No. | 1483065-60-6 |
| Molecular Formula | C5H2ClN3S |
| Molecular Weight | 171.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-Chloroisothiazolo[5,4-d]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
4-Chloroisothiazolo[5,4-d]pyrimidine (CAS 1483065-60-6), molecular formula C5H2ClN3S and molecular weight 171.61 g/mol, is a CATO reference standard with documented purity and traceability.
4-Chloroisothiazolo[5,4-d]pyrimidine (C5H2ClN3S) contains a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H2ClN3S |
| Molecular Weight | 171.61 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chloroisothiazolo Standards
- 3-Chloroisothiazolo[3,4-b]pyridine (CAS 42242-09-1)
- 3-Chloroisothiazolo[5,4-b]pyridine (CAS 913264-70-7)
- 7-Chloroisothiazolo[4,5-b]pyridine (CAS 2766230-58-2)
- 6-Chloroisothiazolo[5,4-b]pyridine-3-carboxylic acid (CAS 932702-35-7)
- Ethyl 7-chloroisothiazolo[4,3-d]pyrimidine-3-carboxylate (CAS 1250999-94-0)
Recommended Standards
- 7-Chlorothiazolo[4,5-d]pyrimidine (CAS 1353101-37-7)
- 5-Chlorothiazolo[4,5-d]pyrimidine (CAS 1535441-43-0)
- 7-Chlorothiazolo[5,4-d]pyrimidine (CAS 13316-12-6)
- 4-Chloro-[1,2,5]thiadiazolo[3,4-c]pyridine (CAS 26271-17-0)
- 2-[3-(2-methoxyethyl)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1486485-55-5)
- N-[3-(Benzyloxy)phenyl]-2-bromoacetamide (CAS 947240-52-0)
- 3-(Piperidin-4-yl)propan-1-amine (CAS 860229-31-8)
- 4-methyl-2-[(3-methylpiperazin-1-yl)methyl]morpholine (CAS 1354952-01-4)
- 6-bromo-5-fluoro-1,2-dihydroquinazolin-2-one (CAS 1036756-06-5)
- 4,6-Dimethoxy-2-methylpyrimidine (CAS 13566-48-8)
- N-(4-(2-((3-(N,N-Dimethylsulfamoyl)phenyl)amino)-6H-1,3,4-thiadiazin-5-yl)phenyl)acetamide (CAS 795285-35-7)
- 6-Cyano-5-cyclopropoxy-N-methylpicolinamide (CAS 1243445-63-7)
- 951893-88-2 2-Chloro-3-(4-methoxy-2-methylphenyl)-1-propene MFCD07775078 (CAS 951893-88-2)
- Des-Ser34-Gly33Tirzepatide (CAS CATO-CPTD788941)
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 18665070610 / Nicole.chen@cato-chem.com