5-Methyl-2-(pyrazolo[1,5-a]pyrazin-3-yl)pyrimidin-4-ol CAS 1330044-24-0
| CAS No. | 1330044-24-0 |
| Molecular Formula | C11H9N5O |
| Molecular Weight | 227.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Methyl-2-(pyrazolo[1,5-a]pyrazin-3-yl)pyrimidin-4-ol 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.
5-Methyl-2-(pyrazolo[1,5-a]pyrazin-3-yl)pyrimidin-4-ol (CAS 1330044-24-0), molecular formula C11H9N5O and molecular weight 227.22 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 5-Methyl-2-(pyrazolo[1,5-a]pyrazin-3-yl)pyrimidin-4-ol is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 227.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C11H9N5O |
| Molecular Weight | 227.22 g/mol |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 5 |
Related Methyl Standards
- 1H-Pyrazolo[4,3-d]pyrimidine, 3-bromo-1-ethyl- (CAS 1357143-39-5)
- 1H-Pyrazolo[4,3-d]pyrimidine, 3-bromo-1,5-dimethyl- (CAS 1781514-84-8)
- Pyrazolo[1,5-a]pyrimidine-3-carbonitrile, 5,7-dichloro-2-methyl- (CAS 1310131-77-1)
- 5-(1H-Pyrazolo[3,4-b]pyridin-3-yl)-1H-pyrrole-2-carboxylic acid (CAS 658696-08-3)
- 1H-Pyrazolo[4,3-c]pyridin-3-amine, 4,5,6,7-tetrahydro-5-(phenylmethyl)- (CAS 682732-81-6)
- 1H-Pyrazolo[3,4-d]pyrimidine-3-carbonitrile, 4-chloro-6-(methylthio)- (CAS 1379363-08-2)
- 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 3-bromo-1,6-dihydro-1-methyl- (CAS 68479-27-6)
- 4-(Pyrazolo[1,5-a]pyridin-3-ylamino)phenol (CAS 136873-00-2)
Recommended Standards
- 3-(4-Methoxypyrimidin-2-yl)pyrazolo[1,5-a]pyrazine (CAS 1330043-94-1)
- 5-Methyl-8-nitro-5H-pyrido[4,3-b]indole (CAS 133415-03-9)
- 4-Amino-8-cyanoquinoline-3-carbohydrazide (CAS 1329632-93-0)
- 3-Phenylpyrazolo[1,5-a]pyrimidine-2,7(1H,4H)-dione (CAS 1334487-59-0)
- 4-(Trifluoromethyl)-1,4,5,6-tetrahydropyridine-3-carboxamide (CAS 175204-83-8)
- 3-(1-(3-(4-Bromophenyl)propanoyl)pyrrolidin-3-yl)thiazolidine-2,4-dione (CAS 1795481-46-7)
- 4-Phenyl-2-(2-(propan-2-ylidene)hydrazinyl)thiazole (CAS 22067-26-1)
- Ziprasidone Impurity 65 (CAS CATO-C4X-124065)
- 5-(2-Nitrophenyl)-1H-1,2,4-triazole (CAS 6219-54-1)
- 8-((2-Hydroxyethyl)thio)-7-methoxypyrido[4,3-d]pyrimidine-2,4(1H,3H)-dione (CAS 2883421-56-3)
- (2-Isopropoxy-5-methylphenyl)methanamine (CAS 1341803-00-6)
- 1-tert-butyl 2-methyl 1,2,3,6-tetrahydropyridine-1,2-dicarboxylate (CAS 164298-41-3)
- Florfenicol Impurity 8 (CAS CATO-C4X-20758)
- Liraglutide(8-31)TFA Salt (CAS CATO-C4X-19922)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com