4-((3,4-Dihydroxybenzylidene)amino)-3-(pyridin-2-yl)-1H-1,2,4-triazole-5(4H)-thione CAS 613248-43-4
| CAS No. | 613248-43-4 |
| Molecular Formula | C14H11N5O2S |
| Molecular Weight | 313.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-((3,4-Dihydroxybenzylidene)amino)-3-(pyridin-2-yl)-1H-1,2,4-triazole-5(4H)-thione (CAS 613248-43-4) is a high-purity analytical reference standard with the molecular formula C14H11N5O2S and a molecular weight of 313.33 g/mol.
4-((3,4-Dihydroxybenzylidene)amino)-3-(pyridin-2-yl)-1H-1,2,4-triazole-5(4H)-thione (C14H11N5O2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C14H11N5O2S |
| Molecular Weight | 313.33 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Dihydroxybenzylidene Standards
- (5E)-5-(3,4-Dihydroxybenzylidene)-2-mercapto-3-phenyl-3,5-dihydro-4H-imidazol-4-one (CAS 897340-70-4)
- N'-(2,4-Dihydroxybenzylidene)-4-nitrobenzohydrazide (CAS 303084-13-1)
- 4-((3,4-Dihydroxybenzylidene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478256-29-0)
- 4-((3,4-Dihydroxybenzylidene)amino)-3-(2-fluorophenyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 577789-70-9)
- 4-((3,4-Dihydroxybenzylidene)amino)-3-(4-fluorophenyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 573975-64-1)
- 3-(2-(2,3-Dihydroxybenzylidene)-1-methylhydrazinyl)benzo[d]isothiazole 1,1-dioxide (CAS 591242-33-0)
- (Z)-2-(3,4-Dihydroxybenzylidene)-6,7-dihydroxybenzofuran-3(2H)-one (CAS 576-02-3)
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Recommended Standards
- 3-Methyl-1-(3-nitrophenyl)-2-thioxo-2,3-dihydroquinazolin-4(1H)-one (CAS 56739-41-4)
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- 2-Phenyl-4H-spiro[benzo[e][1,4,2]oxazaphosphinine-3,1'-cyclohexane] 2-oxide (CAS 220976-25-0)
- 4-(2-Fluorophenyl)-3-methyl-1-(2-phenoxyethyl)-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 860786-75-0)
- 5-Amino-3-(3,4,5-triethoxyphenyl)isoxazole-4-carbonitrile (CAS 902568-45-0)
- 2-(4-Bromobenzyl)-5-chlorobenzo[d]oxazole (CAS 102394-37-6)
- Thiazolo[4,5-c]pyridin-4(5H)-one (CAS 1208988-80-0)
- 5-[(4-ethoxyphenyl)amino]-1,3,4-thiadiazole-2-thiol (CAS 68161-60-4)
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- (5R)-5-Hydroxy-3-oxo-6-(benzyloxy)-hexanoic Acid tert-Butyl Ester (CAS 147849-63-6)
- Tirzepatide Impurity 21 X TFA Salt (CAS CATO-C4X-324021)
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