6-Chloro-5-methylthieno[2,3-d]pyrimidin-4(3H)-one CAS 56844-42-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 56844-42-9 |
| Molecular Formula | C7H5ClN2OS |
| Molecular Weight | 200.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 6-Chloro-5-methylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 56844-42-9), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C7H5ClN2OS. Molecular weight: 200.65 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C7H5ClN2OS |
| Molecular Weight | 200.65 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 3-Chloro-6-(methylthio)-1H-pyrazolo[3,4-d]pyrimidine (CAS 100859-88-9)
- 2-Chloro-5-methoxy-[1,3]thiazolo[5,4-b]pyridine (CAS 1196154-04-7)
- 6-Chloro-2-(methylthio)oxazolo[5,4-b]pyridine (CAS 1206716-60-0)
- 7-Chloro-2-methylthiazolo[5,4-d]pyrimidin-5-amine (CAS 1211584-94-9)
- 2-Chloro-7-methylthieno[3,2-d]pyrimidin-4(1H)-one (CAS 1265593-71-2)
- 4-Chloro-3-(methylthio)-1H-pyrazolo[3,4-d]pyrimidine (CAS 130224-66-7)
- 2-Chloro-6-methylthieno[3,2-d]pyrimidin-4(3H)-one (CAS 1429629-67-3)
- 7-Chloro-5-(methylthio)-1H-pyrazolo[4,3-d]pyrimidine (CAS 1435806-45-3)
Recommended Standards
- 6-Chloro-2-(methylthio)-7H-purine (CAS 66191-23-9)
- 7-(Chloromethyl)-5H-[1,3]thiazolo[3,2-a]pyrimidin-5-one (CAS 62773-09-5)
- 6-Chloro-1H-pyrido[2,3-b][1,4]thiazin-2(3H)-one (CAS 43186-57-8)
- Ethyl 5-(2-chlorophenoxy)-3-phenyl-1,2,4-triazine-6-carboxylate (CAS 338957-42-9)
- (R)-2-amino-3-(1-(tert-butoxycarbonyl)-1H-pyrazolo[3,4-b]pyridin-5-yl)propanoic acid (CAS 2387560-85-0)
- 3-ethyl-3-methylmorpholine (CAS 938326-10-4)
- Butylphthalide Impurity 52 (CAS 74459-23-7)
- 3-Bromo-4-methyl-benzoyl chloride (CAS 21900-33-4)
- 2-chloro-6-methyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 1060816-56-9)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788679)
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