3-(2-Hydroxyphenyl)-4,5-dihydro-1,2-oxazole-5-carboxylic acid CAS 712347-85-8
| CAS No. | 712347-85-8 |
| Molecular Formula | C10H9NO4 |
| Molecular Weight | 207.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3-(2-Hydroxyphenyl)-4,5-dihydro-1,2-oxazole-5-carboxylic acid (C10H9NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 207.18 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
3-(2-Hydroxyphenyl)-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 712347-85-8), molecular formula C10H9NO4 and molecular weight 207.18 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 | C10H9NO4 |
| Molecular Weight | 207.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
Related Hydroxyphenyl Standards
- (E)-4-((2-hydroxyphenyl)amino)-4-oxobut-2-enoic acid (CAS 1161742-66-0)
- (E)-4-((4-Hydroxyphenyl)amino)-4-oxobut-2-enoic acid (CAS 143629-26-9)
- (S)-2-(2-Hydroxyphenyl)-4,5-dihydrooxazole-4-carboxylic acid (CAS 155880-02-7)
- (R)-2-(2-Hydroxyphenyl)-4,5-dihydrooxazole-4-carboxylic acid (CAS 155880-11-8)
- (Z)-4-((2-Hydroxyphenyl)amino)-4-oxobut-2-enoic acid (CAS 59256-46-1)
- (Z)-4-((4-hydroxyphenyl)amino)-4-oxobut-2-enoic acid (CAS 28173-23-1)
- 2-(2-Hydroxyphenyl)-4,5-dihydrooxazole-4-carboxylic acid (CAS 37592-62-4)
- 3-[(2-hydroxyphenyl)carbamoyl]prop-2-enoic acid (CAS 83549-07-9)
Recommended Standards
- 3-(1-Nitroethyl)isobenzofuran-1(3H)-one (CAS 79017-08-6)
- 3-(2-Nitro-phenyl)-acrylic acid methyl ester (CAS 612-43-1)
- 2-Nitrobenzyl acrylate (CAS 49594-70-9)
- 3-(2-oxo-1,3-oxazolidin-3-yl)benzoic acid (CAS 537657-97-9)
- Methyl 4-iodo-3,5-dimethylbenzoate (CAS 1192548-13-2)
- 5-(Trifluoromethyl)-5H-thianthren-5-ium tetrafluoroborate (CAS 2648079-80-3)
- 2-Bromo-4,5-difluoroaniline (CAS 64695-79-0)
- 2-Methyl-2,6-diazaspiro[3.4]octane oxalate (CAS 1408074-75-8)
- 3-(3-Methyl-2-oxo-2,3-dihydro-1H-imidazol-1-yl)benzoic acid (CAS 1713461-69-8)
- 1-(2-Butoxy-3,5-difluorophenyl)ethanol (CAS 1443344-57-7)
- 1-[(1-aminobutan-2-yl)oxy]-2-methylbenzene hydrochloride (CAS 1384428-01-6)
- 1-(Piperidin-4-yl)pyrrolidin-2-one hydrochloride (CAS 548769-02-4)
- (2-chlorophenyl)(3-methoxyphenyl)methanamine (CAS 1183375-86-1)
- Semaglutide impurity 91 (CAS CATO-C4X-222691)
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