4-(3,4-Dichlorophenyl)-5-(methylsulfanyl)-1,2,3-thiadiazole CAS 865660-65-7
| CAS No. | 865660-65-7 |
| Molecular Formula | C9H6Cl2N2S2 |
| Molecular Weight | 277.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-(3,4-Dichlorophenyl)-5-(methylsulfanyl)-1,2,3-thiadiazole is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-(3,4-Dichlorophenyl)-5-(methylsulfanyl)-1,2,3-thiadiazole (CAS 865660-65-7), molecular formula C9H6Cl2N2S2 and molecular weight 277.19 g/mol, is a CATO reference standard with documented purity and traceability.
4-(3,4-Dichlorophenyl)-5-(methylsulfanyl)-1,2,3-thiadiazole (C9H6Cl2N2S2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point; 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 | C9H6Cl2N2S2 |
| Molecular Weight | 277.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Dichlorophenyl Standards
- (2,6-Dichlorophenyl) methylcyanocarbonimidodithioate (CAS 152382-18-8)
- 4-(2,4-Dichlorophenyl)-5-(methylsulfanyl)-1,2,3-thiadiazole (CAS 338409-02-2)
- 5-[(3,4-Dichlorophenyl)sulfanyl]-4-methyl-1,2,3-thiadiazole (CAS 338978-71-5)
- 338978-81-7 5-[(2,4-dichlorophenyl)sulfanyl]-4-methyl-1,2,3-thiadiazole KS-00003FKM (CAS 338978-81-7)
- 2-(2,4-dichlorophenyl)-5-methyl-1H-1,3-benzimidazole (CAS 111500-53-9)
- 1-(3,5-Dichlorophenyl)-3-phenylprop-2-en-1-one (CAS 1217248-40-2)
- (2E)-1-(3,4-Dichlorophenyl)-3-phenylprop-2-en-1-one (CAS 144100-20-9)
- (2E)-1-(2,5-Dichlorophenyl)-3-phenylprop-2-en-1-one (CAS 168208-79-5)
Recommended Standards
- 4-(2,5-Dichlorothiophen-3-yl)-2-(methylsulfanyl)pyrimidine (CAS 339020-26-7)
- 4,6-Dichloro-N-(2,4,4-trimethylpentan-2-yl)-1,3,5-triazin-2-amine (CAS 72058-41-4)
- 5,12-Dichlorotricyclo[8.2.2.24,7]hexadeca-4,6,10,12,13,15-hexaene (CAS 27414-57-9)
- 3-(1,1-Difluorobut-3-en-1-yl)-8-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridine (CAS 477889-55-7)
- ((2R,7aS)-2-Fluorotetrahydro-1H-pyrrolizin-7a(5H)-yl)methanol-d3-1 (CAS 2883770-53-2)
- (3-Chloro-2-fluorophenyl)methanesulfonyl chloride (CAS 1314905-61-7)
- Methyl 2-(6-chloropyrimidin-4-yl)acetate (CAS 1097779-00-4)
- 1-Fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-2-ol (CAS 2638502-42-6)
- 2-((((2-Hydroxyethyl)amino)oxy)carbonyl)benzene-1,4-diol (CAS 1841081-53-5)
- Methyl 3-(N-(2-ethylphenyl)sulfamoyl)benzo[b]thiophene-2-carboxylate (CAS 932304-08-0)
- (4-Chlorophenyl)(3-(phenylsulfonyl)-8-azabicyclo[3.2.1]octan-8-yl)methanone (CAS 1448073-12-8)
- 3-Ethyl-5-nitro-1H-indole-2-carboxylic acid (CAS 446830-63-3)
- 3-Ethyl-6-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 57773-19-0)
- Biotinyl-Glucagon (1-29) (human, rat, porcine) trifluoroacetate salt (CAS 1802086-28-7)
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