5,7-Dimethyl-3-nitropyrazolo[1,5-a]pyrimidin-2(1H)-one CAS 89977-75-3
| CAS No. | 89977-75-3 |
| Molecular Formula | C8H8N4O3 |
| Molecular Weight | 208.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5,7-Dimethyl-3-nitropyrazolo[1,5-a]pyrimidin-2(1H)-one 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.
CATO supplies 5,7-Dimethyl-3-nitropyrazolo[1,5-a]pyrimidin-2(1H)-one (CAS 89977-75-3), a certified reference material (molecular formula C8H8N4O3, MW 208.17 g/mol) for analytical method development and quality control.
Structurally, 5,7-Dimethyl-3-nitropyrazolo[1,5-a]pyrimidin-2(1H)-one (C8H8N4O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 208.17 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).
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 | C8H8N4O3 |
| Molecular Weight | 208.17 g/mol |
| Appearance | Off-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 methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 4 |
Related Dimethyl Standards
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Recommended Standards
- 5,6-Dihydroxy-3-methylbenzofuran-2-carboxylic acid (CAS 21452-90-4)
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- 5,6,7-Trihydroxy-2-methyl-4H-chromen-4-one (CAS 5186-26-5)
- 5-Nitrobenzofuran-2-carboxamide (CAS 267644-49-5)
- 2-Ethyl-6-methylaniline-d13 (CAS 1219794-93-0)
- 4-((4-Iodophenyl)amino)-4-oxobutanoic acid (CAS 62134-54-7)
- Allyl Methanethiosulfonate (CAS 14202-77-8)
- (3,4,5-Trimethyl-1H-pyrazol-1-yl)acetyl chloride (CAS 1171855-00-7)
- 1-(4-Bromo-2-chlorophenyl)-3-(cyclopropylmethyl)urea (CAS 1210524-20-1)
- 2-(4-Methoxybenzyl)-1H-benzo[d]imidazol-5-amine (CAS 263022-51-1)
- 19-Norandrosterone glucuronide-d4 (CAS 682355-44-8)
- 2,2,2-Trifluoroethyl 2-cyanoacetate (CAS 27827-83-4)
- 1-(Cyclohex-3-en-1-yl)-2-methylpropan-1-ol (CAS 825-45-6)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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