4-(chloromethyl)-3-methyl-1,2-oxazole CAS 99979-76-7
| CAS No. | 99979-76-7 |
| Molecular Formula | C5H6ClNO |
| Molecular Weight | 131.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-(chloromethyl)-3-methyl-1,2-oxazole (CAS 99979-76-7) is a high-purity analytical reference standard with the molecular formula C5H6ClNO and a molecular weight of 131.56 g/mol.
The molecular framework of 4-(chloromethyl)-3-methyl-1,2-oxazole (C5H6ClNO) is characterized by an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. 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).
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 | C5H6ClNO |
| Molecular Weight | 131.56 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related chloromethyl Standards
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Recommended Standards
- 4-(Chloromethyl)-1-methyl-1H-1,2,3-triazole (CAS 269726-46-7)
- 4-Amino-5-chloro-1-methylpyrazole (CAS 406189-04-6)
- 3-Chloro-5,6-dihydropyridin-2(1H)-one (CAS 207976-92-9)
- 5-(Chloromethyl)-1-methyl-1H-1,2,3-triazole (CAS 759447-96-6)
- (2,2'-bipyrazine)(2,2'-linked(4-methylpyridine))ruthenium hexafluoroborate (CAS 1782116-92-0)
- 2-(7-Methoxy-1,2,3,4-tetrahydronaphthalen-1-yl)ethan-1-amine (CAS 59081-66-2)
- 1-(5-(Trifluoromethyl)thiophen-3-yl)ethan-1-one (CAS 1517721-97-9)
- 4-Bromo-3-(trifluoromethyl)benzene-1,2-diamine (CAS 1445995-83-4)
- N-(3-Chloro-4-fluoro-benzyl)-o-methyl-hydroxylamine (CAS 543730-53-6)
- 5- Methoxy- 4- (phenylmethoxy) -1H- indole- 3- acetonitrile (CAS 2433-37-6)
- (1S,4R)-1,2-Dimethyl-1,2,3,4-tetrahydroisoquinoline-4,6,7-triol (CAS 79201-23-3)
- 2-ethoxy-5-nitro-1,3-benzoxazole (CAS 1803857-00-2)
- 4-Chloro-N-(4-(3-oxo-3-(thiazol-2-ylamino)propyl)thiazol-2-yl)benzamide (CAS 1021255-48-0)
- Autoinducing Peptide I trifluoroacetate salt (CAS 200010-29-3)
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