4-sulfanylidene-1H,4H,7H-pyrazolo[3,4-d]pyrimidine-6-sulfonic acid CAS 753436-77-0
| CAS No. | 753436-77-0 |
| Molecular Formula | C5H4N4O3S2 |
| Molecular Weight | 232.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-sulfanylidene-1H,4H,7H-pyrazolo[3,4-d]pyrimidine-6-sulfonic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
4-sulfanylidene-1H,4H,7H-pyrazolo[3,4-d]pyrimidine-6-sulfonic acid (CAS 753436-77-0) is a high-purity analytical reference standard with the molecular formula C5H4N4O3S2 and a molecular weight of 232.24 g/mol.
Structurally, 4-sulfanylidene-1H,4H,7H-pyrazolo[3,4-d]pyrimidine-6-sulfonic acid (C5H4N4O3S2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 232.24 g/mol, it falls into the medium-molecular-weight range. 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 | C5H4N4O3S2 |
| Molecular Weight | 232.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related sulfanylidene Standards
- 2-Methyl-3-sulfanylidene-1H,2H,3H,5H,10H,10aH-imidazo[1,5-b]isoquinolin-1-one (CAS 133211-47-9)
- 4-(2-Sulfanylidene-2,3-dihydro-1H-1,3-benzodiazol-1-yl)butanoic acid (CAS 1459280-12-6)
- 3-Propyl-2-sulfanylidene-1H,2H,3H,4H-thieno[3,2-d]pyrimidin-4-one (CAS 187538-55-2)
- 5-methyl-4-sulfanylidene-1H,4H-thieno[2,3-d]pyrimidine-6-carboxylic acid (CAS 1176120-44-7)
- 3-Ethyl-2-sulfanylidene-6-(trifluoromethyl)-1,2,3,4-tetrahydropyrimidin-4-one (CAS 216016-27-2)
- 7-Sulfanylidene-10-thia-3,6,8-triazatricyclo[7.3.0.0^{2,6}]dodeca-1(9),2,11-trien-4-one (CAS 477889-23-9)
- 3-(2-Sulfanylidene-2,3-dihydro-1H-1,3-benzodiazol-1-yl)propanoic acid (CAS 26345-75-5)
- 2-(5-Sulfanylidene-4,5-dihydro-1h-1,2,4-triazol-3-yl)benzoic acid (CAS 1119452-21-9)
Recommended Standards
- 4-Oxo-3-propyl-3,4-dihydrophthalazine-1-carboxylic acid (CAS 565165-40-4)
- 5-((3-Methoxyphenyl)amino)-6-methyl-1,2,4-triazin-3(2H)-one (CAS 459213-93-5)
- 4-Isopropyl-6-nitroquinolin-2(1H)-one (CAS 934687-46-4)
- 5-((Benzyloxy)methyl)pyrimidine-2,4(1H,3H)-dione (CAS 7295-02-5)
- 5-(4-Chlorophenyl)-3-phenylisoxazole (CAS 1148-87-4)
- 3,6-Dibromo-9-n-octyl-carbazole (CAS 79554-93-1)
- 8-Azaspiro[bicyclo[3.2.1]octane-3,4'-piperidine] (CAS 2163529-09-5)
- 3-Methoxy-4-nitrobenzene-1-sulfonyl Chloride (CAS 1261646-30-3)
- 3-Carbamoyl-1,2,2-trimethylcyclopentane-1-carboxylic acid (CAS 929976-25-0)
- 7-(3-Fluorophenyl)-2-[4-(2-fluorophenyl)piperazin-1-yl]-3H,4H-thieno[3,2-d]pyrimidin-4-one (CAS 1243058-37-8)
- 2-Phenylthieno[3,2-d]pyrimidin-4-ol (CAS 18678-14-3)
- 3-Iodo-1,6-dimethyl-1H-indazole (CAS 1257535-50-4)
- (2-(4-Methoxyphenyl)piperidin-1-yl)(phenyl)methanone (CAS 226920-47-4)
- Palmitoyl Hexapeptide-12 (CAS 171263-26-6)
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