4-Chloro-5-nitro-1-(phenylsulfonyl)-1H-pyrazolo[3,4-b]pyridine CAS 1638760-12-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1638760-12-9 |
| Molecular Formula | C12H7ClN4O4S |
| Molecular Weight | 338.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-5-nitro-1-(phenylsulfonyl)-1H-pyrazolo[3,4-b]pyridine (CAS 1638760-12-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C12H7ClN4O4S. Molecular weight: 338.73 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C12H7ClN4O4S |
| Molecular Weight | 338.73 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 7-Chloro-6-nitro-3-(phenylsulfonyl)-3H-imidazo[4,5-b]pyridine (CAS 1638767-29-9)
- 4-Chloro-5-hydroxynaphthalene-2,7-disulfonic acid (CAS 90-21-1)
- 6-Chloro-3-((4-fluorophenyl)sulfonyl)-2H-chromen-2-one (CAS 904449-46-3)
- Ethyl 4-(4-chloro-3-nitrophenyl)-2-methyl-6-oxo-1,4,5,6-tetrahydropyridine-3-carboxylate (CAS 478261-59-5)
- 5-Chloro-1-methyl-3-((5-phenyl-1,3,4-oxadiazol-2-yl)imino)indolin-2-one (CAS 84640-88-0)
- 8-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)-2-methylquinoline (CAS 1024367-69-8)
- 4-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-1-phenyl-1H-pyrazol-5-amine (CAS 1823183-91-0)
- 1-(1-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-1H-indol-3-yl)ethan-1-one (CAS 339099-11-5)
Recommended Standards
- 1-(4-chlorophenyl)-2-[2-(trifluoromethyl)-1H-1,3-benzimidazol-1-yl]-1-ethanone 321980-89-6 KS-00001UX5 (CAS 321980-89-6)
- Fluquazone (CAS 37554-40-8)
- (2-Bromo-2'-fluoro-[1,1'-biphenyl]-3,3'-diyl)diboronic acid (CAS 2374862-17-4)
- Sodium 2-[3-(hydroxymethyl)-1H-indol-1-yl]acetate (CAS 1803604-62-7)
- (3-Amino-6-ethyl-5,6,7,8-tetrahydrothieno[2,3-b]quinolin-2-yl)(3,4-dimethoxyphenyl)methanone (CAS 445269-20-5)
- 4-Chloro-8-methoxy-3-methylquinoline (CAS 39593-11-8)
- Minodronic Impurity 1 (CAS 21755-34-0)
- 3-Amino[1,2,4]triazolo[4,3-a]pyridine-6-carboxylic acid (CAS 1306738-89-5)
- 2-Amino-1-(2-bromophenyl)ethanol (CAS 71095-20-0)
- D-Ser12-Semaglutide (CAS CATO-C4X-2226240)
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