6-Chloro-2-Benzoxazolinone CAS 19932-84-4
| CAS No. | 19932-84-4 |
| Molecular Formula | C7H4ClNO2 |
| Molecular Weight | 169.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 169.57 g/mol gives 6-Chloro-2-Benzoxazolinone distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
6-Chloro-2-Benzoxazolinone (CAS 19932-84-4), molecular formula C7H4ClNO2 and molecular weight 169.57 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H4ClNO2, 6-Chloro-2-Benzoxazolinone contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 169.57 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C7H4ClNO2 |
| Molecular Weight | 169.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 7-chloro-1H-pyrazolo[4,3-d]pyrimidin-5-amine (CAS 1086398-36-8)
- 2-Chloro-4-methoxypyrimidine-5-carbonitrile (CAS 1106295-93-5)
- 3-Chloro-[1,2,4]triazolo[4,3-b]pyridazin-6-amine (CAS 1150888-24-6)
- 7-Chloro-3H-imidazo[4,5-b]pyridine 4-oxide (CAS 115953-98-5)
- 7-Chloro-2-methyloxazolo[5,4-d]pyrimidine (CAS 118767-93-4)
- 3-Chloro-6-(hydroxymethyl)pyrazine-2-carbonitrile (CAS 1257072-48-2)
- 7-Chloro[1,2,4]triazolo[4,3-c]pyrimidin-5-amine (CAS 1306739-68-3)
- 5-Chloro-3-(furan-2-yl)-1H-1,2,4-triazole (CAS 1315346-11-2)
Recommended Standards
- Chlorzoxazone (CAS 95-25-0)
- 7-Chloro-4-fluoro-1H-indole (CAS 1000341-60-5)
- Clofarabine Impurity 7 (CAS 10310-21-1)
- 4-Chloro-7-fluoro-1h-indole (CAS 1000341-78-5)
- ethyl 3-{[2-(aminocarbonyl)-3-thienyl]amino}-2-(2,2,2-trifluoroacetyl)acrylate (CAS 648410-15-5)
- 3,3-Dimethyl-4-phenylbutanoic acid (CAS 13540-66-4)
- (R)-4-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-6-(methylthio)hexanoic acid (CAS 1013997-63-1)
- Bis(2-methoxyphenyl)phosphine (CAS 10177-79-4)
- 2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)ethyl ethyl carbonate (CAS 188680-93-5)
- Dapagliflozin Impurity 97 (CAS CATO-C4X-113897)
- 2-(2-Bromo-5-(difluoromethyl)pyridin-3-yl)acetic acid (CAS 1805297-99-7)
- 3-(2-Hydroxy-3-methoxyphenyl)-1-(4-hydroxyphenyl)prop-2-en-1-one (CAS 206194-33-4)
- 6-(Difluoromethyl)indoline (CAS 1783569-57-2)
- Angiotensin III Antipeptide (CAS 133605-55-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com