1,3,6-Trimethylpyrazolo[1,5-a]pyrimidin-7(1H)-one CAS 90559-16-3
| CAS No. | 90559-16-3 |
| Molecular Formula | C9H11N3O |
| Molecular Weight | 177.20 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 1,3,6-Trimethylpyrazolo[1,5-a]pyrimidin-7(1H)-one.
1,3,6-Trimethylpyrazolo[1,5-a]pyrimidin-7(1H)-one (CAS 90559-16-3) is a high-purity analytical reference standard with the molecular formula C9H11N3O and a molecular weight of 177.20 g/mol.
Structurally, 1,3,6-Trimethylpyrazolo[1,5-a]pyrimidin-7(1H)-one (C9H11N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 177.20 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C9H11N3O |
| Molecular Weight | 177.20 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 |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 3 |
Related Trimethylpyrazolo Standards
- 2,5,6-Trimethylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 478077-89-3)
- 2,5,7-Trimethylpyrazolo[1,5-a]pyrimidin-6-ol (CAS 2749532-91-8)
- 3,4,6-Trimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 4081-82-7)
- 2,5,7-Trimethylpyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 146778-12-3)
- 2,4,6-Trimethylpyrazolo[1,5-a]pyrazine-3-carbaldehyde (CAS 94813-92-0)
- 2,5,7-trimethylpyrazolo[1,5-a]pyrimidine (CAS 112581-74-5)
- 2,5,6-Trimethylpyrazolo[1,5-a]pyridine (CAS 234754-44-0)
- n,5,7-Trimethylpyrazolo[1,5-a]pyrimidine-3-carboxamide (CAS 1380717-12-3)
Recommended Standards
- 1,3,4-Trimethyl-1H,6H,7H-pyrazolo[3,4-b]pyridin-6-one (CAS 57411-62-8)
- 1,3-Dimethyl-2-(2-nitrovinyl)benzene (CAS 60610-66-4)
- 1,2,3,4-tetrahydroquinoxaline-2-carboxamide (CAS 90559-19-6)
- 1,4,6-Trimethyl-1h,2h,3h-pyrazolo[3,4-b]pyridin-3-one (CAS 71290-70-5)
- 1-(iodomethyl)-2-oxabicyclo[2.1.1]hexane (CAS 1935986-52-9)
- Benzyl 2-oxo-4-phenylbutanoate (CAS 84688-29-9)
- 4-(4-Bromophenyl)-4-dimethylaminocyclohexanone (CAS 65619-52-5)
- 6-Fluoro-5-(trifluoromethyl)-1H-indole (CAS 875306-79-9)
- 2-Methylimidazo[1,2-a]pyridin-5-ol (CAS 204927-17-3)
- 5-(2,4-Dichlorophenyl)-1,3,4-oxadiazol-2-ol, 97% (CAS 23767-45-5)
- nsifentrine impurity 5 (CAS 68619-18-1)
- 3-(4-Bromo-2-nitrophenoxy)piperidine hydrochloride (CAS 1219979-70-0)
- (3-(Difluoromethyl)-2,6-difluoropyridin-4-yl)methanamine (CAS 1806023-17-5)
- Peptide YY (3-36) (canine, mouse, porcine, rat) trifluoroacetate salt (CAS 126339-09-1)
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