Oxazole-2-carbohydrazide CAS 90831-48-4
| CAS No. | 90831-48-4 |
| Molecular Formula | C4H5N3O2 |
| Molecular Weight | 127.10 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 Oxazole-2-carbohydrazide.
CATO supplies Oxazole-2-carbohydrazide (CAS 90831-48-4), a certified reference material (molecular formula C4H5N3O2, MW 127.10 g/mol) for analytical method development and quality control.
Based on its molecular formula C4H5N3O2, Oxazole-2-carbohydrazide contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 127.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Oxazole-2-carbohydrazide 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 | C4H5N3O2 |
| Molecular Weight | 127.10 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 3 |
Related Oxazole Standards
- Oxazole-5-acetic Acid (CAS 1083337-90-9)
- Methyl oxazole-4-carboxylate (CAS 170487-38-4)
- 1,2-oxazole-3-carbohydrazide (CAS 62438-02-2)
- Methyl Oxazole-2-carboxylate (CAS 31698-88-1)
- Oxazole-4-carboxylic acid hydrazide (CAS 885274-12-4)
- Oxazole-5-carbohydrazide (CAS 885274-30-6)
- Oxazole-4-carbothioamide (CAS 118802-31-6)
- 1,2-Oxazole-5-carbothioamide (CAS 175334-72-2)
Recommended Standards
- N’-hydroxy-4H-1,2,4-triazole-3-carboximidamide (CAS 926241-76-1)
- N-(5-Amino-2H-1,2,3-triazol-4-yl)formamide (CAS 328977-78-2)
- Piperidine-2,4,6-trione (CAS 5768-12-7)
- Methyl 4H-1,2,4-triazole-4-carboxylate (CAS 351388-98-2)
- 3-amino-N-methanesulfonylpropanamide hydrochloride (CAS 1795495-29-2)
- Ethyl 3-amino-4-chloro-1-methyl-1H-pyrrole-2-carboxylate (CAS 100158-71-2)
- Methyl 2,2-difluoro-2-(4-methoxyphenyl)acetate (CAS 1393539-93-9)
- tert-Butyl 5-amino-6-fluoro-1h-indazole-1-carboxylate (CAS 1105175-14-1)
- 4-Fluoro-1-(methylsulfonyl)-1H-pyrazole (CAS 1935130-61-2)
- Wilforgine (CAS 37239-47-7)
- Methoxy(triethyleneoxy)-undecyltrimethoxysilane (CAS 1858242-37-1)
- Methyl 4-phenyl-1H-pyrazole-3-carboxylate (CAS 5932-28-5)
- Ethyl 2-amino-5-(3-oxopiperazin-1-yl)benzoate (CAS 1308033-63-7)
- Antifreeze Polypeptide 6 (winter flounder) trifluoroacetate salt (CAS 122604-16-4)
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