7-Amino-3-chloro-2-methyl-5-(methylsulfonyl)pyrazolo[1,5-a]pyrimidine-6-carbonitrile CAS 2798826-03-4
| CAS No. | 2798826-03-4 |
| Molecular Formula | C9H8ClN5O2S |
| Molecular Weight | 285.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 285.71 g/mol gives 7-Amino-3-chloro-2-methyl-5-(methylsulfonyl)pyrazolo[1,5-a]pyrimidine-6-carbonitrile distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
7-Amino-3-chloro-2-methyl-5-(methylsulfonyl)pyrazolo[1,5-a]pyrimidine-6-carbonitrile (CAS 2798826-03-4) is a high-purity analytical reference standard with the molecular formula C9H8ClN5O2S and a molecular weight of 285.71 g/mol.
Structurally, 7-Amino-3-chloro-2-methyl-5-(methylsulfonyl)pyrazolo[1,5-a]pyrimidine-6-carbonitrile (C9H8ClN5O2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 285.71 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 7-Amino-3-chloro-2-methyl-5-(methylsulfonyl)pyrazolo[1,5-a]pyrimidine-6-carbonitrile 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.
Physical & Chemical Properties
| Molecular Formula | C9H8ClN5O2S |
| Molecular Weight | 285.71 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- Methyl 4-((tert-butoxycarbonyl)amino)-3-oxobutanoate (CAS 119960-04-2)
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