3-(Methylsulfonyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine CAS 2287285-14-5
| CAS No. | 2287285-14-5 |
| Molecular Formula | C7H11N3O2S |
| Molecular Weight | 201.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-(Methylsulfonyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine.
3-(Methylsulfonyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine (CAS 2287285-14-5), molecular formula C7H11N3O2S and molecular weight 201.25 g/mol, is a CATO reference standard with documented purity and traceability.
3-(Methylsulfonyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine (C7H11N3O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H11N3O2S |
| Molecular Weight | 201.25 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methylsulfonyl Standards
- (2-((Methylsulfonyl)methyl)pyrimidin-5-yl)methanamine (CAS 1342864-44-1)
- O-(4-(methylsulfonyl)benzyl)hydroxylamine (CAS 443986-18-3)
- 4-(Methylsulfonyl)picolinic acid (CAS 1026676-25-4)
- 2-(Methylsulfonyl)-4-pyridinecarboxylic Acid (CAS 1186663-27-3)
- 6-(Methylsulfonyl)-2-pyridinecarboxylic Acid (CAS 1186663-28-4)
- 6-(Methylsulfonyl)nicotinic Acid (CAS 1186663-34-2)
- 5-(Methylsulfonyl)-2-pyridinecarboxylic Acid (CAS 1186663-48-8)
- 1-(Methylsulfonyl)-3-nitrobenzene (CAS 2976-32-1)
Recommended Standards
- 3-(2-aminothiazol-4-yl)benzonitrile (CAS 202664-32-2)
- 3-Amino-4-(methylamino)benzene-1-sulfonamide (CAS 66315-22-8)
- 3-((5-Ethyl-1H-1,2,4-triazol-3-yl)thio)propanoic acid (CAS 723249-75-0)
- 4-(2-Aminothiazol-4-yl)benzonitrile (CAS 436151-85-8)
- ((3-Fluorophenyl)sulfonyl)-L-valine (CAS 1103303-26-9)
- tert-Butyl 2-chloro-2-oxoacetate (CAS 39061-59-1)
- Methyl 2-{4-[4-(dimethylcarbamoyl)phenyl]phenyl}acetate (CAS 1820683-39-3)
- tert-Butyl cis-4-(methylamino)cyclohexyl)carbamate (CAS 883864-61-7)
- (2E,4E,6E)-2,7-Dimethylocta-2,4,6-trienedial (CAS 5056-17-7)
- N-(4-(2-aminoethoxy)phenyl)-3-methylbutanamide hydrochloride (CAS 1832791-45-3)
- 1-(1H-Imidazol-2-yl)-N-((tetrahydrofuran-2-yl)methyl)butan-1-amine (CAS 886505-80-2)
- 5-Hydrazinyl-4-methoxy-2-(methylsulfanyl)pyrimidine (CAS 1441760-81-1)
- (E)-3-(4-Hydroxy-3,5-dimethylphenyl)acrylonitrile (CAS 1234662-01-1)
- Semaglutide impurity 255 (CAS CATO-C4X-2226255)
Why CATO?
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