5-[(4-Methylphenyl)methyl]-7-(trifluoromethyl)-1H,3H,3aH,4H,5H-[1,3]thiazolo[3,4-a]quinoxalin-4-one CAS 1024019-81-5
| CAS No. | 1024019-81-5 |
| Molecular Formula | C19H17F3N2OS |
| Molecular Weight | 378.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-[(4-Methylphenyl)methyl]-7-(trifluoromethyl)-1H,3H,3aH,4H,5H-[1,3]thiazolo[3,4-a]quinoxalin-4-one.
5-[(4-Methylphenyl)methyl]-7-(trifluoromethyl)-1H,3H,3aH,4H,5H-[1,3]thiazolo[3,4-a]quinoxalin-4-one (CAS 1024019-81-5), molecular formula C19H17F3N2OS and molecular weight 378.41 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H17F3N2OS, 5-[(4-Methylphenyl)methyl]-7-(trifluoromethyl)-1H,3H,3aH,4H,5H-[1,3]thiazolo[3,4-a]quinoxalin-4-one contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 378.41 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 | C19H17F3N2OS |
| Molecular Weight | 378.41 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1988 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methylphenyl Standards
- (E)-({6-[(4-methylphenyl)sulfanyl]pyridin-3-yl}methylidene)amino 3-methoxybenzoate (CAS 338960-64-8)
- 1-(4-Methylphenyl)-2-({5-[4-(trifluoromethyl)phenyl]-1,3,4-oxadiazol-2-yl}sulfanyl)-1-ethanone (CAS 477857-02-6)
- {2-[(4-methylphenyl)sulfanyl]pyridin-3-yl}methyl N-(2,6-dimethylphenyl)carbamate (CAS 338413-53-9)
- 2-{[(4-methylphenyl)methyl]sulfanyl}-4-(phenylsulfanyl)-5,6,7,8-tetrahydroquinazoline (CAS 343374-07-2)
- 4-{[(4-methylphenyl)methyl]sulfanyl}-N-(prop-2-en-1-yl)-8-thia-3,5-diazatricyclo[7.4.0.0^{2,7}]trideca-1(13),2(7),3,5,9,11-hexaen-6-amine (CAS 478029-90-2)
- 4-[[[(4-Methylphenyl)sulfonyl]oxy]methyl]-2,6-pyridinedicarboxylic Acid 2,6-Dimethyl Ester 909247-46-7 (CAS 909247-46-7)
- N2-(4-methylphenyl)-N4-[4-(trifluoromethyl)phenyl]-6-chloro-1,3,5-triazine-2,4-diamine (CAS 680215-23-0)
- 2,5-Bis[(methylphenyl)amino]-1,4-benzenedicarboxylic acid (CAS 41576-36-7)
Recommended Standards
- Relugolix Impurity 118 (CAS 308831-93-8)
- (2-Phenyl-2H-1,2,3-triazol-4-yl)(3-(3-(thiophen-2-yl)-1,2,4-oxadiazol-5-yl)azetidin-1-yl)methanone (CAS 1327631-78-6)
- Relebactam Impurity 99 (CAS 1174019-22-7)
- (2R,3S,4R,5R)-2-(Hydroxymethyl)-5-(6-((2-(thiazol-2-yl)ethyl)amino)-9H-purin-9-yl)tetrahydrofuran-3,4-diol (CAS 143354-83-0)
- 3,3',5,5'-Tetrabromobisphenol A-d10 (CAS CATO-CCHM704297)
- {2-[4-(Morpholin-4-ylsulfonyl)phenyl]ethyl}amine hydrochloride (CAS 1050208-12-2)
- 5-(4-Methoxyphenyl)-N-(pyridin-4-yl)oxazole-2-carboxamide (CAS 955631-53-5)
- H-Leu-Gly-βNA (CAS 100930-00-5)
- 3-Amino-2-Oxazolidinone-D4（Aoz-D4） (CAS 1188331-23-8)
- TCBT 22 (CAS 121107-44-6)
- 2-(3-Cyclopropyl-4-(thiophen-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acid (CAS 937606-48-9)
- G2013 (CAS 1986-15-8)
- 5-(4-bromophenyl)-2-(trifluoromethyl)-3-furoyl chloride (CAS 231953-36-9)
- Semaglutide impurity 204 (CAS CATO-C4X-2226204)
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