3-nitro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine CAS 148777-84-8
| CAS No. | 148777-84-8 |
| Molecular Formula | C6H12N4O2 |
| Molecular Weight | 172.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-nitro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine (CAS 148777-84-8), molecular formula C6H12N4O2 and molecular weight 172.19 g/mol, is a CATO reference standard with documented purity and traceability.
3-nitro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine (C6H12N4O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C6H12N4O2 |
| Molecular Weight | 172.19 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 4 |
Related nitro Standards
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- 4-nitro-1H-pyrazolo[3,4-b]pyridine (CAS 1234616-75-1)
- 5-nitro-1H-pyrazolo[3,4-b]pyridine (CAS 63572-73-6)
- 2-(3-Nitro-1h-1,2,4-triazol-1-yl)acetic acid (CAS 116419-36-4)
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- Methyl 3-nitro-1h-1,2,4-triazole-5-carboxylate (CAS 21733-00-6)
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Recommended Standards
- 1-Methyl-5-(1H-pyrrol-1-yl)-1H-pyrazole-4-carbonitrile (CAS 146885-48-5)
- 1H-pyrazolo[3,4-d]pyrimidine-3-carboxylic acid (CAS 1535399-62-2)
- 2-amino-1-methyl-1H-1,3-benzodiazole-6-carbonitrile (CAS 141691-42-1)
- 6-Azido-L-norleucine (CAS 159610-92-1)
- 2-[5,7-Bis(trifluoromethyl)-1,8-naphthyridin-2-yl]-2-(4-bromophenyl)acetonitrile (CAS 478043-29-7)
- 2-((4-(Methylamino)piperidin-1-yl)methyl)benzonitrile hydrochloride (CAS 1289387-45-6)
- 2-Hydroxy-3-mesitylpropanoic acid (CAS 1540603-07-3)
- 1-Bromo-3-(trifluoromethyl)-5-ethoxybenzene (CAS 1310416-62-6)
- 3-Methoxy-1,4-dimethyl-1H-1,2,4-triazol-5(4H)-one (CAS 385377-26-4)
- 2-Amino-N-(1-(pyrazin-2-yl)ethyl)acetamide (CAS 1353944-29-2)
- 1-Bromo-4-(bromomethyl)-2-iodobenzene (CAS 1261448-45-6)
- 2-(2-(Methylsulfonyl)phenyl)oxirane (CAS 93114-07-9)
- 1-BROMO-7-FLUORO-2-NAPHTHALDEHYDE (CAS 925442-76-8)
- Semaglutide Impurity 121 X Sodium Salt (CAS CATO-C4X-2226121)
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