2-Ethyl-8,9-dimethoxy-5-((4-methylbenzyl)thio)-[1,2,4]triazolo[1,5-c]quinazoline CAS 860650-28-8
| CAS No. | 860650-28-8 |
| Molecular Formula | C21H22N4O2S |
| Molecular Weight | 394.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2-Ethyl-8,9-dimethoxy-5-((4-methylbenzyl)thio)-[1,2,4]triazolo[1,5-c]quinazoline (C21H22N4O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 394.49 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).
2-Ethyl-8,9-dimethoxy-5-((4-methylbenzyl)thio)-[1,2,4]triazolo[1,5-c]quinazoline (CAS 860650-28-8), molecular formula C21H22N4O2S and molecular weight 394.49 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-Ethyl-8,9-dimethoxy-5-((4-methylbenzyl)thio)-[1,2,4]triazolo[1,5-c]quinazoline 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 | C21H22N4O2S |
| Molecular Weight | 394.49 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 2-Ethyl-8,9-dimethoxy-5-[(2-phenylethyl)sulfanyl]-[1,2,4]triazolo[1,5-c]quinazoline (CAS 1221715-31-6)
- 2-Ethyl-8,9-dimethoxy-5-((2-methylbenzyl)thio)-[1,2,4]triazolo[1,5-c]quinazoline (CAS 860650-42-6)
- 2-Ethyl-8,9-dimethoxy-5-((3-methylbenzyl)thio)-[1,2,4]triazolo[1,5-c]quinazoline (CAS 685108-49-0)
- 4,4'-((2,5-Dimethoxy-1,4-phenylene)bis(ethyne-2,1-diyl))dibenzaldehyde (CAS 1190963-83-7)
- 8,9-Dimethoxy-2-(prop-1-en-2-yl)-1,2,12,12a-tetrahydrochromeno[3,4-b]furo[2,3-h]chromen-6(6aH)-one (CAS 12679-58-2)
- 7,8-Dimethoxy-2-(quinolin-2-yl)-4H-chromen-4-one (CAS 6622-20-4)
- 4-{9,10-dimethoxy-5,11-dioxo-5H,6H,6aH,11H-isoindolo[2,1-a]quinazolin-6-yl}butanoic acid (CAS 1630763-90-4)
- (2,3-Dimethoxy-benzyl)-(2-fluoro-5-methoxy-benzyl)-pyridin-2-ylmethyl-amine (CAS 883549-47-1)
Recommended Standards
- rac-Tamsulosin EP Impurity D (CAS 94666-11-2)
- 3-(1,1-Dioxidotetrahydrothiophen-3-yl)-5-(1-methyl-2-oxoindolin-3-ylidene)-2-thioxothiazolidin-4-one (CAS 312938-47-9)
- 2-{[4-(6-Methyl-1,3-benzothiazol-2-yl)anilino]carbonyl}cyclohexanecarboxylic acid (CAS 900601-97-0)
- 4-((Anthracen-9-ylmethylene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478255-61-7)
- 3-Amino-2-(4-chlorophenyl)-1,1,1-trifluoropropan-2-ol hydrochloride (CAS 1221722-26-4)
- 2-Bromo-4-fluorothieno[2,3-c]pyridin-7(6H)-one (CAS 2751698-09-4)
- Ethyl 3-(piperidin-3-yloxy)benzoate hydrochloride (CAS 1220033-70-4)
- N-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)methyl)-2,2,2-trifluoroacetamide (CAS 169506-59-6)
- 2,4-Dinitrophenylhydrazine Impurity 1 (CAS 61947-85-1)
- 4-chloro-5-fluoro-7-methoxy-quinazoline (CAS 1600511-86-1)
- N-(6-Amino-1-methyl-2,4-dioxo-3-propyl-1,2,3,4-tetrahydropyrimidin-5-yl)cyclopentanecarboxamide (CAS 132940-63-7)
- 4-Chloro-2-fluoro-5-nitrobenzonitrile (CAS 1242269-80-2)
- Dabigatran Impurity 9 (CAS 1381757-44-3)
- Semaglutide impurity 208 (CAS CATO-C4X-2226208)
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