5-Chloro-2-propyl-1,3-benzoxazole CAS 66073-80-1
| CAS No. | 66073-80-1 |
| Molecular Formula | C10H10ClNO |
| Molecular Weight | 195.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-Chloro-2-propyl-1,3-benzoxazole (C10H10ClNO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 195.65 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
5-Chloro-2-propyl-1,3-benzoxazole (CAS 66073-80-1), molecular formula C10H10ClNO and molecular weight 195.65 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 | C10H10ClNO |
| Molecular Weight | 195.65 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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- Methyl 2-((5-hydroxy-2,2-dimethyl-4-oxochroman-7-yl)oxy)acetate (CAS 956950-84-8)
- 3-Hydroxy-7,8,3'-trimethoxyflavone (CAS 1017060-12-6)
- 3-Ethoxy-2,4-difluorobenzenesulfonyl chloride (CAS 1706439-10-2)
- 3-(Aminomethyl)benzimidamide dihydrochloride (CAS 328552-96-1)
- (4-Ethoxy-2-methylphenyl)methanamine (CAS 1495703-36-0)
- 3,4-Dichloronaphthalen-1-ol (CAS 58877-90-0)
- 1-[(4-Bromophenyl)methoxy]-1H-imidazole (CAS 477869-84-4)
- Thymopoietin II Peptide Fragment (CAS 56795-64-3)
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