Oxazolo[5,4-d]pyrimidin-2(1H)-one CAS 90889-60-4
| CAS No. | 90889-60-4 |
| Molecular Formula | C5H3N3O2 |
| Molecular Weight | 137.10 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 Oxazolo[5,4-d]pyrimidin-2(1H)-one.
CATO supplies Oxazolo[5,4-d]pyrimidin-2(1H)-one (CAS 90889-60-4), a certified reference material (molecular formula C5H3N3O2, MW 137.10 g/mol) for analytical method development and quality control.
The molecular framework of Oxazolo[5,4-d]pyrimidin-2(1H)-one (C5H3N3O2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), Oxazolo[5,4-d]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.
Physical & Chemical Properties
| Molecular Formula | C5H3N3O2 |
| Molecular Weight | 137.10 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) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 3 |
Related Oxazolo Standards
- Oxazolo[5,4-d]pyrimidin-7-ol (CAS 27433-54-1)
- 5H-Oxazolo[3,2-a]pyridin-5-ol (CAS 201532-30-1)
- 7H-Oxazolo[3,2-a]pyridin-7-ol (CAS 201532-34-5)
- 5H-Oxazolo[3,2-a]pyridin-5-amine (CAS 201532-32-3)
- [1,3]oxazolo[5,4-d]pyrimidin-7-amine (CAS 10325-61-8)
- Oxazolo[5,4-b]pyridin-2(1H)-one (CAS 118767-92-3)
- Oxazolo[4,5-b]pyridin-2(3H)-one (CAS 60832-72-6)
- Oxazolo[4,5-c]pyridin-2(3H)-one (CAS 59851-50-2)
Recommended Standards
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- 5,5,5-Trifluoropentanenitrile (CAS 89866-61-5)
- Triethylmelamine (CAS 16268-92-1)
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- 9-Methoxyacridine (CAS 10228-90-7)
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- Dequalinium Impurity 16 (CAS CATO-C4X-193616)
- decahydropyrrolo[3,4-b]pyrrolizine (CAS 132414-55-2)
- 4,4''-Bis(diphenylamino)-[1,1':4',1''-terphenyl]-2',5'-dicarbaldehyde (CAS 1042941-53-6)
- 5-Chloro-2-(1,4,5,6-tetrahydropyrimidin-2-yl)aniline (CAS 917750-14-2)
- (S)-2-((tert-Butoxycarbonyl)(methyl)amino)-4-hydroxy-4-methylpentanoic acid (CAS 2050909-89-0)
- Ganirelix 1-4 peptide (CAS 208599-57-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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