5-Chloropyrazolo[1,5-a]thieno[2,3-e]pyrimidine-3-carboxylic acid CAS 680210-93-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 680210-93-9 |
| Molecular Formula | C9H4ClN3O2S |
| Molecular Weight | 253.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Chloropyrazolo[1,5-a]thieno[2,3-e]pyrimidine-3-carboxylic acid (CAS 680210-93-9), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C9H4ClN3O2S. Molecular weight: 253.66 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C9H4ClN3O2S |
| Molecular Weight | 253.66 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chloropyrazolo Standards
- Methyl 4-chloropyrazolo[1,5-a]quinoxaline-7-carboxylate (CAS 2842029-52-9)
- 4-(7-Chloropyrazolo[1,5-a]pyridin-2-yl)phenol (CAS 885270-46-2)
- 8-Chloropyrazolo[1,5-c]quinazoline-5-thiol (CAS 17218-77-8)
- ethyl 6-chloropyrazolo[1,5-a]pyrimidine-2-carboxylate (CAS 1005209-44-8)
- ethyl 7-chloropyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 749216-54-4)
- ethyl 5-chloropyrazolo[1,5-a]pyridine-3-carboxylate (CAS 886364-13-2)
- Ethyl 5-chloropyrazolo[1,5-a]quinazoline-3-carboxylate (CAS 174842-56-9)
- Ethyl 4-chloropyrazolo[1,5-a]quinoxaline-3-carboxylate (CAS 62040-05-5)
Recommended Standards
- 4-Chloro-1-(4-fluorophenyl)-N-methyl-1H-pyrazole-5-carboxamide (CAS 318949-30-3)
- 6-Amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-sulfonyl chloride (CAS 926246-59-5)
- 2-Chloro-n-(3-cyclopropyl-1h-pyrazol-5-yl)-5-fluoropyrimidin-4-amine (CAS 851434-98-5)
- HCV Core Protein (59-68) (H-2542.0001) (CAS 160187-72-4)
- tert-Butyl 3-(4-chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)pyrrolidine-1-carboxylate (CAS 1240301-66-9)
- 2-Hydroxy-6-methylpyrimidine-4-carboxylic acid hydrochloride (CAS 1185300-30-4)
- 4-Methyl-2-(o-tolyl)oxazol-5(4H)-one (CAS 958029-51-1)
- (4-Fluoro-2-(pentyloxy)phenyl)methanol (CAS 1443309-56-5)
- (3S,4R)-tert-Butyl 3-hydroxy-4-(hydroxymethyl)pyrrolidine-1-carboxylate (CAS 1932246-33-7)
- Semaglutide Impurity 157 (x TFA Salt) (CAS CATO-C4X-2226157)
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