3-(Benzenesulfonyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine CAS 861209-12-3
| CAS No. | 861209-12-3 |
| Molecular Formula | C14H13N3O2S |
| Molecular Weight | 287.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-(Benzenesulfonyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine 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.
3-(Benzenesulfonyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine (CAS 861209-12-3), molecular formula C14H13N3O2S and molecular weight 287.34 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 3-(Benzenesulfonyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 287.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C14H13N3O2S |
| Molecular Weight | 287.34 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Benzenesulfonyl Standards
- 1-(Benzenesulfonyl)-2-methyl-1H-pyrrolo[2,3-b]pyridin-5-amine (CAS 1186502-59-9)
- 1-Benzenesulfonyl-2,3-dihydro-1H-quinolin-4-one (CAS 101097-55-6)
- 1-Benzenesulfonyl-7-methoxy-1H-indole (CAS 146073-32-7)
- 21094-70-2 2-[(Benzenesulfonyl)methyl]-1H-benzimidazole DTXSID50368364 (CAS 21094-70-2)
- (2E)-2-(Benzenesulfonyl)-3-[(3-methyl-1H-pyrazol-5-yl)amino]prop-2-enenitrile (CAS 1030385-94-4)
- 1-Benzenesulfonyl-2,6-dimethyl-5-azaindole (CAS 1427504-84-4)
- 1-(Benzenesulfonyl)-1H-pyrrolo[2,3-b]pyridine-2-carbaldehyde (CAS 189089-91-6)
- 1-(Benzenesulfonyl)-2-bromo-1H-pyrrole (CAS 168106-36-3)
Recommended Standards
- 3-(5-Methylisoxazol-3-yl)-2-(p-tolylimino)thiazolidin-4-one (CAS 673452-00-1)
- 3,5-Dibromo-6-chloropyrazin-2-amine (CAS 566205-01-4)
- 2-Bromo-1-(6,8-dichloro-2-(3-iodophenyl)quinolin-4-yl)ethanone (CAS 29240-68-4)
- 3,5-Dibromo-6-chloropyridin-2(1H)-one (CAS 6515-39-5)
- 3-Amino-1-benzyl-4-(2-chlorophenyl)azetidin-2-one (CAS 1291488-55-5)
- 5-((2-Bromo-4,5-dimethylphenoxy)methyl)-1,3,4-oxadiazol-2-amine (CAS 1706464-20-1)
- (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4,4,4-trifluorobutanoic acid (CAS 1310680-31-9)
- 2,6-Diaminopyrimidin-4(3H)-one (CAS 143504-99-8)
- trans-Bis(tri-n-butylphosphine)nickel(II) bromide (CAS 73543-91-6)
- Indolin-5-yl dimethylcarbamate (CAS 136910-75-3)
- N-Cyclohexyl-5-methyl-3-(p-tolyl)pyrazolo[1,5-a]pyrimidin-7-amine (CAS 890611-94-6)
- (cyclobutylmethyl)[(2,4-dimethoxyphenyl)methyl]amine (CAS 1096278-17-9)
- Lomefloxacin Impurity 20 (CAS CATO-C4X-207320)
- Hexapeptide-11 (CAS 161258-30-6)
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