5,6-Dimethyl-2-(3-methyl-5-oxo-2,5-dihydro-1H-pyrazol-1-yl)thieno[2,3-d]pyrimidin-4(3H)-one CAS 325476-22-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 325476-22-0 |
| Molecular Formula | C12H12N4O2S |
| Molecular Weight | 276.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,6-Dimethyl-2-(3-methyl-5-oxo-2,5-dihydro-1H-pyrazol-1-yl)thieno[2,3-d]pyrimidin-4(3H)-one (CAS 325476-22-0) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C12H12N4O2S. Molecular weight: 276.31 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C12H12N4O2S |
| Molecular Weight | 276.31 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 5-(4-(4-Fluorophenyl)piperazin-1-yl)-1-methyl-1H-1,2,4-triazol-3-amine (CAS 241127-34-4)
- 5-Methyl-2-thiouridine (CAS 32738-09-3)
- 4-Phenylmethanesulfonylbenzoic acid (CAS 70793-11-2)
- 5-Oxo-1-(prop-2-yn-1-yl)pyrrolidine-2-carboxylic acid (CAS 132311-91-2)
- 3-Cyano-N,N-dimethylbenzene-1-sulfonamide (CAS 597561-38-1)
- 6-Chloro-N-(2-chlorobenzyl)pyrimidin-4-amine (CAS 945896-44-6)
- Methyl 4-([1,1'-biphenyl]-4-yl)-2-bromothiazole-5-carboxylate (CAS 1206908-04-4)
- 2-(1-Aminocycloheptyl)acetic acid hydrochloride (CAS 1335042-25-5)
- Succinimidyl-p-nitrophenylacetate (CAS 68123-33-1)
- Semaglutide impurity 76 (CAS CATO-C4X-222676)
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