6-[(4-Ethyl-5-{[(3-methoxyphenyl)methyl]sulfanyl}-4H-1,2,4-triazol-3-yl)methoxy]-2-phenyl-2,3-dihydropyridazin-3-one CAS 439121-29-6
| CAS No. | 439121-29-6 |
| Molecular Formula | C23H23N5O3S |
| Molecular Weight | 449.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6-[(4-Ethyl-5-{[(3-methoxyphenyl)methyl]sulfanyl}-4H-1,2,4-triazol-3-yl)methoxy]-2-phenyl-2,3-dihydropyridazin-3-one (CAS 439121-29-6), molecular formula C23H23N5O3S and molecular weight 449.53 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 6-[(4-Ethyl-5-{[(3-methoxyphenyl)methyl]sulfanyl}-4H-1,2,4-triazol-3-yl)methoxy]-2-phenyl-2,3-dihydropyridazin-3-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 449.53 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), 6-[(4-Ethyl-5-{[(3-methoxyphenyl)methyl]sulfanyl}-4H-1,2,4-triazol-3-yl)methoxy]-2-phenyl-2,3-dihydropyridazin-3-one 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 | C23H23N5O3S |
| Molecular Weight | 449.53 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 6-[(4-Ethyl-5-{[(4-methoxyphenyl)methyl]sulfanyl}-4H-1,2,4-triazol-3-yl)methoxy]-2-phenyl-2,3-dihydropyridazin-3-one (CAS 866136-78-9)
- N-(4-methoxyphenyl)-2-(2-(tosylmethyl)-1H-benzo[d]imidazol-1-yl)acetamide (CAS 339100-19-5)
- 3-(4-Methoxyphenyl)-2-((2-methylbenzyl)thio)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one (CAS 477331-49-0)
- 3-(4-Methoxyphenyl)-2-((3-methylbenzyl)thio)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one (CAS 477331-37-6)
- 3-(4-Methoxyphenyl)-2-((4-methylbenzyl)thio)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one (CAS 477332-81-3)
- 1,5-Bis((4-methoxyphenyl)amino)anthracene-9,10-dione (CAS 2944-16-3)
- 5-Ethyl-3-[4-(4-methoxyphenyl)piperazine-1-carbonyl]-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazolin-11-one (CAS 1574585-28-6)
- 4,4'-(2,2-Bis(4-methoxyphenyl)ethene-1,1-diyl)dibenzaldehyde (CAS 2165348-28-5)
Recommended Standards
- 1-(1-(4-Methyl-2-(1H-pyrrol-1-yl)thiazole-5-carbonyl)piperidin-4-yl)-3-phenylimidazolidine-2,4-dione (CAS 2034330-76-0)
- (((((3-Bromo-1,2-phenylene)bis(oxy))bis(methylene))bis(oxy))bis(ethane-2,1-diyl))bis(trimethylsilane) (CAS 2401894-65-1)
- 5-(4-Fluorobenzyl)-N-(3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-amine (CAS 1077629-23-2)
- 4-(5-amino-6-(1-oxo-1,2,3,4-tetrahydroisoquinolin-6-yl)pyrazin-2-yl)-N-cyclopropyl-N-methylbenzenesulfonamide (CAS 1396771-17-7)
- (R)-4-(1H-Indol-3-yl)-2-methylbutan-1-ol (CAS 97399-95-6)
- 3-Chloro-N-(4-cyano-3-methylisoxazol-5-yl)benzamide (CAS 773139-84-7)
- 5-(4-Ethylphenoxymethyl)-4-(2-methylpropyl)-4H-1,2,4-triazole-3-thiol (CAS 748778-13-4)
- 5-Bromo-4-methoxy-2-methylphenol (CAS 14078-73-0)
- 4-Pyridinebutanoic acid, α-amino-, (αS)- (CAS 1240588-62-8)
- 3,3-Dimethyl-3-trifluoromethylbutyrophenone (CAS 898764-74-4)
- 2-({[(4-bromophenyl)methyl]carbamoyl}amino)pentanoic acid (CAS 1396965-91-5)
- N-(Quinolin-6-yl)acetamide (CAS 22433-76-7)
- (6-Methylpyridin-3-yl)methanol hydrochloride (CAS 357288-10-9)
- Tirzepatide Impurity 58 (CAS CATO-C4X-324058)
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