2-(5-methyl-2-phenyloxazol-4-yl)ethyl 4-methylbenzenesulfonate CAS 170861-68-4
| CAS No. | 170861-68-4 |
| Molecular Formula | C19H19NO4S |
| Molecular Weight | 357.42 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.
2-(5-methyl-2-phenyloxazol-4-yl)ethyl 4-methylbenzenesulfonate (CAS 170861-68-4), molecular formula C19H19NO4S and molecular weight 357.42 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(5-methyl-2-phenyloxazol-4-yl)ethyl 4-methylbenzenesulfonate (C19H19NO4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 357.42 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 2-(5-methyl-2-phenyloxazol-4-yl)ethyl 4-methylbenzenesulfonate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C19H19NO4S |
| Molecular Weight | 357.42 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2005 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related methyl Standards
- 2-(5-Phenyloxazol-2-yl)butyl benzoate (CAS 56894-68-9)
- 4-(3-(5-Methyl-2-phenyloxazol-4-yl)propanoyl)benzaldehyde (CAS 125531-53-5)
- 4-(2-Methyl-4-phenyloxazol-5-yl)benzenesulfonamide (CAS 93014-16-5)
- (6-(2-(5-Methyl-2-phenyloxazol-4-yl)ethoxy)pyridin-3-yl)methanol (CAS 331746-72-6)
- 6-(2-(5-Methyl-2-phenyloxazol-4-yl)ethoxy)nicotinaldehyde (CAS 157169-61-4)
- 4-[2-(5-Methyl-2-phenyloxazol-4-yl)ethoxy]benzaldehyde (CAS 103788-59-6)
- 2-((5-Oxo-2-phenyloxazol-4(5H)-ylidene)methyl)phenyl acetate (CAS 52900-70-6)
- 3-(2-Phenyloxazol-4-yl)benzo[d]isoxazole-5-carboxylic acid (CAS 1422062-93-8)
Recommended Standards
- N-[furan-2-yl(4-methoxyphenyl)methyl]-4-methylbenzene-1-sulfonamide (CAS 1631738-40-3)
- (E)-1-(3-((4-Methoxyphenyl)sulfonyl)azetidin-1-yl)-3-phenylprop-2-en-1-one (CAS 1798423-12-7)
- D-Cysteine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-S-methyl- (CAS 1393524-09-8)
- 2-((2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)thio)acetic acid (CAS 180576-11-8)
- (4-(3-Bromophenyl)-1H-imidazol-2-yl)methanamine (CAS 944903-44-0)
- 2-Chloro-4-(4-nitrophenoxy)pyrimidine (CAS 630126-02-2)
- N-(3-acetylphenyl)-2-((4-phenyl-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 332909-83-8)
- 3,5-Difluoro-2-methyl-4-propoxyphenylboronic acid (CAS 2096339-21-6)
- 5-Hydroxy-2-oxo-2,3-dihydro-1H-[1]benzazephe-4-carboxylic Acid Ethyl Ester (CAS 108993-98-2)
- tert-Butyl ((1R,2S)-2-hydroxy-1,2-diphenylethyl)carbamate (CAS 142560-68-7)
- 2-Isopropoxyethan-1-amine (CAS 81731-43-3)
- Ethyl 4-Ethoxybutyrate (CAS 26448-91-9)
- 3-((2-Bromo-4-fluorobenzyl)thio)-5-methyl-1H-1,2,4-triazole (CAS 931205-08-2)
- Semaglutide impurity 69 (CAS CATO-C4X-222669)
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