5-(4-Chlorophenyl)-1,3,4-thiadiazole-2-thiol CAS 63857-85-2
| CAS No. | 63857-85-2 |
| Molecular Formula | C8H5ClN2S2 |
| Molecular Weight | 228.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 5-(4-Chlorophenyl)-1,3,4-thiadiazole-2-thiol (CAS 63857-85-2), a certified reference material (molecular formula C8H5ClN2S2, MW 228.72 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution, 5-(4-Chlorophenyl)-1,3,4-thiadiazole-2-thiol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 228.72 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).
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 | C8H5ClN2S2 |
| Molecular Weight | 228.72 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.) | 1975 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Chlorophenyl Standards
- 4-(4-Chlorophenyl)-1,2,3-thiadiazole-5(2H)-thione (CAS 338408-98-3)
- 2-((4-Chlorophenyl)thio)pentan-3-one (CAS 1029989-39-6)
- 1-(2-Chlorophenyl)-2-(propylthio)ethan-1-one (CAS 1157207-45-8)
- 1-(3-Chlorophenyl)-2-(ethylthio)propan-1-one (CAS 1157221-88-9)
- 1-(3-Chlorophenyl)-2-(propylthio)ethan-1-one (CAS 1157363-75-1)
- 1-(4-Chlorophenyl)-2-(isopropylthio)ethan-1-one (CAS 1178630-58-4)
- 1-(2-Chlorophenyl)-2-(isopropylthio)ethan-1-one (CAS 1184452-08-1)
- 5-((3-Chlorophenyl)thio)pentan-2-one (CAS 1250919-92-6)
Recommended Standards
- 5-(3-Chloropropyl)-1-cyclohexyltetrazole (CAS 73963-29-8)
- 6-(5-Chlorothiophen-2-yl)pyrimidine-2(1H)-thione (CAS 866019-24-1)
- 4-{4-chloropyrrolo[2,1-f][1,2,4]triazin-7-yl}butanenitrile (CAS 2092473-48-6)
- 6-Chloro-N4,N4-dipropylpyrimidine-2,4-diamine (CAS 339016-15-8)
- 2-(2,3-Dichlorophenyl)piperazine (CAS 910444-59-6)
- Methyl 4,4,4-trifluoro-2-formamido-3-hydroxy-3-(4-methoxyphenyl)butanoate (CAS 649573-18-2)
- 4-(4-((4'-chloro-[1,1'-biphenyl]-2-yl)methyl)piperazin-1-yl)benzoic acid (CAS 916204-05-2)
- Indium(i) bromide (CAS 14280-53-6)
- 3-Iodo-N-isopropylaniline (CAS 1152562-39-4)
- (Z)-4-((3,4-Dichlorophenyl)amino)-4-oxobut-2-enoic acid (CAS 21395-61-9)
- 1-Bromo-2,4-dimethyl-5-nitrobenzene (CAS 69383-59-1)
- Linagliptin Impurity 30 (CAS CATO-C4X-110130)
- Atopaxar, >98% (HPLC) (CAS 751475-53-3)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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