5-[(1e)-2-phenylethenyl]-4h-1,2,4-triazole-3-thiol CAS 218438-53-0
| CAS No. | 218438-53-0 |
| Molecular Formula | C10H9N3S |
| Molecular Weight | 203.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-[(1e)-2-phenylethenyl]-4h-1,2,4-triazole-3-thiol (CAS 218438-53-0), molecular formula C10H9N3S and molecular weight 203.26 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-[(1e)-2-phenylethenyl]-4h-1,2,4-triazole-3-thiol (C10H9N3S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 203.26 g/mol, it falls into the medium-molecular-weight range. 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).
As a certified reference material (CRM), 5-[(1e)-2-phenylethenyl]-4h-1,2,4-triazole-3-thiol 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 | C10H9N3S |
| Molecular Weight | 203.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related e Standards
- 3-[(E)-2-phenylethenyl]-4,5-dihydro-1H-1,2,4-triazole-5-thione (CAS 58064-56-5)
- 1-[(1E)-2-Phenylethenyl]-2(1H)-pyridinone (CAS 61259-55-0)
- 4-(2-Phenylethenyl)-1,3-thiazol-2-amine (CAS 1352128-86-9)
- 4-(2-Phenylethenyl)-1,3-thiazol-2-amine (CAS 488816-56-4)
- 5-[(E)-2-Phenylethenyl]-1,3,4-oxadiazole-2-thiol (CAS 1598405-68-5)
- 2-(2-Phenylethenyl)azepane (CAS 1384433-76-4)
- 6-[(E)-2-Phenylethenyl]-2,3,4,5-tetrahydropyridazin-3-one (CAS 83516-68-1)
- 3-(1-Phenylethenyl)aniline (CAS 1610377-16-6)
Recommended Standards
- 5-(2,2-Dimethoxyethyl)-4-methyl-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 240799-71-7)
- 6-(Dimethylamino)benzo[d]thiazole-2-carbonitrile (CAS 934270-87-8)
- 4-Methyl-2-phenylthiazole-5-carbaldehyde (CAS 55327-23-6)
- 6-(Phenylthio)pyridazin-3-amine (CAS 90844-35-2)
- Methyl 5-chloro-1H-benzo[d]imidazole-2-carboxylate (CAS 113115-62-1)
- 4-Aminofuro[3,2-d]pyrimidine-7-carboxylic acid (CAS 1206181-18-1)
- 2-Amino-4-(2-((2-chlorobenzyl)oxy)phenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carbonitrile (CAS 674805-42-6)
- Lodoxamide lmpurity 19 (CAS 53882-26-1)
- 4-Acetoxybenzenesulfonic acid (CAS 46331-24-2)
- (R)-1-((S)-1-phenylethyl)azetidine-2-carboxylic acid (CAS 204274-32-8)
- N1-((1-Benzylpiperidin-3-yl)methyl)-N1-isopropylethane-1,2-diamine (CAS 1353974-35-2)
- (S)-7'-[Bis[3,5-bis(tert-butyl)phenyl]phosphino]-2,2',3,3'-tetrahydro-1,1'-spirobi[1H-indene]-7-methanamine (CAS 1403328-55-1)
- 1-Ethylcyclohexan-1-amine (CAS 2626-60-0)
- Semaglutide Impurity 143 (CAS CATO-C4X-2226143)
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