Oxazole-4-carboxylic acid hydrazide CAS 885274-12-4
| CAS No. | 885274-12-4 |
| Molecular Formula | C4H5N3O2 |
| Molecular Weight | 127.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Oxazole-4-carboxylic acid hydrazide (C4H5N3O2) 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.
Oxazole-4-carboxylic acid hydrazide (CAS 885274-12-4) is a high-purity analytical reference standard with the molecular formula C4H5N3O2 and a molecular weight of 127.10 g/mol.
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), Oxazole-4-carboxylic acid hydrazide 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.) | 1987 |
| 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-2-carbohydrazide (CAS 90831-48-4)
- 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)
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- Prop-2-en-1-yl N-carbonylcarbamate (CAS 30447-86-0)
- Ammonium silver(I) sulfate (CAS 102262-34-0)
- (4-((2-(Dimethylamino)ethyl)sulfonyl)phenyl)boronic acid (CAS 1232424-25-7)
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- 6-((2-(Methylsulfonyl)ethyl)thio)nicotinonitrile (CAS 1275875-14-3)
- 5-Chloro-1,2,4-triazin-3-amine (CAS 101084-69-9)
- 8,8-Dimethyl-9,10-dihydropyrano[2,3-f]chromen-2(8H)-one (CAS 2221-66-1)
- (3A'R,5'S,6'S,6a'R)-6'-hydroxytetrahydrospiro[cyclohexane-1,2'-furo[2,3-d][1,3]dioxole]-5'-carbaldehyde (CAS 15356-27-1)
- TBRb (CAS 682806-51-5)
- 2-(Difluoromethyl)-6-iodo-5-methylpyridine-3-carboxaldehyde (CAS 1806952-20-4)
- Insulin Degludec Impurity 5 (CAS CATO-C4X-21575)
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