2-Methyloxazole-5-carbohydrazide CAS 90585-89-0
| CAS No. | 90585-89-0 |
| Molecular Formula | C5H7N3O2 |
| Molecular Weight | 141.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Methyloxazole-5-carbohydrazide (CAS 90585-89-0) is a high-purity analytical reference standard with the molecular formula C5H7N3O2 and a molecular weight of 141.13 g/mol.
Based on its molecular formula C5H7N3O2, 2-Methyloxazole-5-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 141.13 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.
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 | C5H7N3O2 |
| Molecular Weight | 141.13 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 Methyloxazole Standards
- 2-Methyloxazole-4-carbohydrazide (CAS 500341-65-1)
- 5-Methyloxazole-4-acetic Acid (CAS 1507656-31-6)
- 4-Methyloxazole-5-acetic Acid (CAS 98140-74-0)
- Methyl 4-methyloxazole-5-carboxylate (CAS 23012-23-9)
- 2-Methyloxazole-4-carbothioamide (CAS 90980-10-2)
- 2-Ethyl-4-methyloxazole-5-carbaldehyde (CAS 1152617-22-5)
- 2-Methyloxazole-5-carbonyl chloride (CAS 1443210-11-4)
- 4-Methyloxazole-5-carbonyl chloride (CAS 62348-24-7)
Recommended Standards
- 2-PRopanone,1-(5-amino-1H-tetrazol-1-yl)-(8CI,9CI) (CAS 25828-06-2)
- 2-Hydroxy-N-methyl-1H-imidazole-1-carboxamide (CAS 61224-25-7)
- 3-(2H-1,2,3-Triazol-2-yl)propanoic acid (CAS 856863-30-4)
- 2-Cyano-N-(methylcarbamoyl)acetamide (CAS 6972-77-6)
- 2-(Ethylsulfonyl)-4-(thiophen-2-yl)-6-(trifluoromethyl)pyrimidine (CAS 832740-90-6)
- 2-Amino-N-(4-fluoro-2-methylphenyl)propanamide (CAS 1104919-88-1)
- (Ra,S)-Ph-Bn-SIPHOX (CAS 2074610-05-0)
- 6-(2,6-Dichlorophenyl)-2-((4-(2-(diethylamino)ethoxy)phenyl)amino)-8-methylpyrido[2,3-d]pyrimidin-7(8H)-one dihydrochloride (CAS 212391-63-4)
- (4-(1H-imidazol-1-yl)-2-(trifluoromethyl)phenyl)boronic acid (CAS 2225179-45-1)
- Finerenone Impurity 269 (CAS CATO-C4X-2880269)
- 4-(3-Chloro-5-trifluoromethyl-pyridin-2-yl)-pyrimidine-2-thiol (CAS 1311278-19-9)
- N-Methyl-N-[(5-methyl-2-phenyl-1,3-oxazol-4-yl)methyl]amine (CAS 132451-29-7)
- (2S)-2-[(6-fluoropyridin-2-yl)formamido]-3-hydroxypropanoic acid (CAS 1562378-20-4)
- β-Asp9-Tirzepatide (CAS CATO-CPTD788931)
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