4-Oxazolecarboxamide CAS 23012-15-9
| CAS No. | 23012-15-9 |
| Molecular Formula | C4H4N2O2 |
| Molecular Weight | 112.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4-Oxazolecarboxamide is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 112.09 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
4-Oxazolecarboxamide (CAS 23012-15-9), molecular formula C4H4N2O2 and molecular weight 112.09 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 | C4H4N2O2 |
| Molecular Weight | 112.09 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.) | 1963 |
| Nitrogen Atoms | 2 |
Related Oxazolecarboxamide Standards
Recommended Standards
- 4-Methyl-1,2,5-oxadiazole-3-carbaldehyde (CAS 90507-35-0)
- 4-Pyrazolecarboxylic Acid (CAS 37718-11-9)
- 4H-pyrazole-3-carboxylic acid (CAS 855643-75-3)
- 5-Amino-1,2,4-triazin-3(2H)-one (CAS 931-85-1)
- tert-Butyl 4-((4-bromobenzyl)amino)-4-cyanopiperidine-1-carboxylate (CAS 2445225-39-6)
- N1-Ethyl-N1-((1-methylpiperidin-2-yl)methyl)ethane-1,2-diamine (CAS 1353972-35-6)
- 1-(3-Bromo-5-fluorobenzyl)-4-methylpiperidine (CAS 1518625-75-6)
- 4,7,7-Trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carbohydrazide (CAS 539858-02-1)
- 3-Methyl-3-(prop-2-yn-1-ylamino)butan-2-one (CAS 1216927-09-1)
- 2-(2-Aminophenyl)-5-methyloxazole-4-carboxylic acid (CAS 1334493-58-1)
- 4-[[(5-Bromo-2-thienyl)sulfonyl]amino]benzoic acid (CAS 327081-37-8)
- 2-Iodo-6-nitrobenzonitrile (CAS 79603-05-7)
- Methyl 3-(benzyloxy)-5-((2,4-difluorobenzyl)carbamoyl)-1-(2,2-dimethoxyethyl)-4-oxo-1,4-dihydropyridine-2-carboxylate (CAS 1229006-21-6)
- D-Phe22-Tirzepatide (CAS CATO-CPTD788912)
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