2,4-Dichloro-5-methylthieno[2,3-d]pyrimidine CAS 56844-38-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 56844-38-3 |
| Molecular Formula | C7H4Cl2N2S |
| Molecular Weight | 219.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,4-Dichloro-5-methylthieno[2,3-d]pyrimidine (CAS 56844-38-3) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C7H4Cl2N2S. Molecular weight: 219.09 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C7H4Cl2N2S |
| Molecular Weight | 219.09 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 Dichloro Standards
- 4,5-Dichloro-2-methylthieno[2,3-d]pyrimidine (CAS 137287-40-2)
- 2,6-Dichloro-4-thiocyanatoaniline (CAS 14030-85-4)
- 4,7-Dichloro-2-methylthieno[3,2-d]pyrimidine (CAS 1823921-18-1)
- 4,7-Dichloro-1,3-benzothiazol-2-amine (CAS 1849-70-3)
- 4,5-Dichloro-benzothiazol-2-ylamine (CAS 1849-71-4)
- 5,6-dichloro-1,3-dihydrobenzimidazole-2-thione (CAS 19462-98-7)
- 2,3-Dichloro-4-thiocyanatoaniline (CAS 7494-03-3)
- 2,4-Dichloro-6-methylthieno[3,2-d]pyrimidine (CAS 35265-82-8)
Recommended Standards
- 2-((4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)methyl)pyridine (CAS 2098263-70-6)
- 2,5-Dichloro-4-thiocyanatoaniline (CAS 772-12-3)
- (4-Methyl-3-(piperidin-4-yl)phenyl)boronic acid (CAS 2225173-10-2)
- 2-(2,3-dihydro-1H-indol-1-yl)-N’-hydroxyethanimidamide (CAS 1016831-95-0)
- 4-Bromo-2-chloro-6-methylbenzaldehyde (CAS 1935316-95-2)
- 3,5-Dibromostyrene (CAS 120359-56-0)
- 4-Bromo-5-phenethoxy-2-(pyridin-4-ylmethyl)pyridazin-3(2H)-one (CAS 565157-34-8)
- (3Z)-4-[(4-Acetylphenyl)amino]-3-(3,4-dimethoxyphenyl)but-3-en-2-one (CAS 339017-47-9)
- Ethyl 5-Bromoimidazo[1,2-a]pyridine-2-carboxylate (CAS 135995-46-9)
- Semaglutide impurity 271 (CAS CATO-C4X-2226271)
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