1-(3-Chlorophenyl)-6-mercapto-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one CAS 929973-42-2
| CAS No. | 929973-42-2 |
| Molecular Formula | C11H7ClN4OS |
| Molecular Weight | 278.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-(3-Chlorophenyl)-6-mercapto-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one 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.
1-(3-Chlorophenyl)-6-mercapto-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one (CAS 929973-42-2), molecular formula C11H7ClN4OS and molecular weight 278.72 g/mol, is a CATO reference standard with documented purity and traceability.
1-(3-Chlorophenyl)-6-mercapto-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one (C11H7ClN4OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H7ClN4OS |
| Molecular Weight | 278.72 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Chlorophenyl Standards
- 1-(2-Chlorophenyl)-6-mercapto-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one (CAS 1416340-88-9)
- 1-(4-Chlorophenyl)-6-thioxo-1,5,6,7-tetrahydro-4h-pyrazolo[3,4-d]pyrimidin-4-one (CAS 941868-08-2)
- 2-(4-Chlorophenyl)-7-sulfanylpyrazolo[1,5-d][1,2,4]triazin-4-ol (CAS 850738-66-8)
- 2-(2-(4-Chlorophenyl)-2-oxoethyl)-5-methylcyclohexane-1,3-dione (CAS 1022859-89-7)
- 4-(4-Chlorophenyl)dibenzofuran (CAS 1369509-91-0)
- 1-(4-Chlorophenyl)-3-((cyclopropylmethyl)amino)pyrrolidine-2,5-dione (CAS 1415719-04-8)
- (3-Chlorophenyl)(3,4-dimethoxyphenyl)methanol (CAS 844683-52-9)
- (4-Chlorophenyl)(3,4-dimethoxyphenyl)methanol (CAS 844683-39-2)
Recommended Standards
- 6-Chloro-3-(2-(methylthio)pyrimidin-4-yl)-1H-pyrazolo[3,4-d]pyrimidine (CAS 1386398-83-9)
- Indapamide Impurity 2 (CAS CATO-C4X-14002)
- 2-amino-7-(4-chlorophenyl)thiazolo[4,5-d]pyridazin-4(5H)-one (CAS 941868-66-2)
- Sildenafil Impurity 294 (CAS 200575-17-3)
- 5-Fluoro-2-hydroxy-3-methoxybenzaldehyde (CAS 862088-16-2)
- 2-Diethylaminoethyl Hexanoate (CAS 10369-83-2)
- 2-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-N-(2-(dimethylamino)-2-phenylethyl)acetamide (CAS 1110883-26-5)
- Cilastatin Ammonium Salt (CAS 877674-82-3)
- (3s)-3-acetyl-3,12-dihydroxy-10-methoxy-6,11-dioxo-1,2,3,4,6,11-hexahydrotetracen-1-yl 2,3,6-trideoxy-3-(l-leucylamino)-|A-l-lyxo-hexopyranoside hydrochloride(1:1) 27360-07-2 KST-1A3369 (CAS 27360-07-2)
- Isavuconazole Impurity 49 (CAS CATO-C4X-123649)
- 2-[methyl(thiolan-3-yl)amino]acetic acid (CAS 1095626-10-0)
- 5,5',5''-(((Benzene-1,3,5-triyltris(ethyne-2,1-diyl))tris(benzene-4,1-diyl))tris(ethyne-2,1-diyl))triisophthalic acid (CAS 1253587-77-7)
- Diisopropyl Disulfide (CAS 4253-89-8)
- Semaglutide impurity 32 (CAS CATO-C4X-222632)
Why CATO?
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