4-Chloro-3,5-dimethylbenzenethiol CAS 150729-72-9
| CAS No. | 150729-72-9 |
| Molecular Formula | C8H9ClS |
| Molecular Weight | 172.68 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.
4-Chloro-3,5-dimethylbenzenethiol (CAS 150729-72-9), molecular formula C8H9ClS and molecular weight 172.68 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to sulfur-containing functionality, chlorine substitution, an aromatic ring system, 4-Chloro-3,5-dimethylbenzenethiol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 172.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 4-Chloro-3,5-dimethylbenzenethiol 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 | C8H9ClS |
| Molecular Weight | 172.68 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 4-Chloro-3-ethylbenzenethiol (CAS 1314935-29-9)
- 2-Chloro-4,5,6,7-tetrahydrobenzo[b]thiophene (CAS 1380233-43-1)
- 2-Chloro-5-methylthioanisole (CAS 1394291-30-5)
- (4-Chloro-2-methylphenyl)(methyl)sulfane (CAS 144266-84-2)
- (3-Chloro-4-methylphenyl)(methyl)sulfane (CAS 53250-85-4)
- (4-Chloro-3-methylphenyl)(methyl)sulfane (CAS 70019-46-4)
- (5-Chloro-2-methylphenyl)(methyl)sulfane (CAS 82961-51-1)
- 1-Chloro-4-(Ethylthio)benzene (CAS 5120-72-9)
Recommended Standards
- (2-Chlorobenzyl)(methyl)sulfane (CAS 57984-15-3)
- (3-Chlorobenzyl)(methyl)sulfane (CAS 76354-13-7)
- (3-Chlorophenyl)(ethyl)sulfane (CAS 34126-15-3)
- 2-(2-Chloroallyl)-5-methylthiophene (CAS 1314902-57-2)
- 5-Amino-2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid (CAS 3326-33-8)
- Methyl 2,4-difluoro-5-methylbenzoate (CAS 1162674-66-9)
- 1-[3-(chloromethyl)benzoyl]piperidine (CAS 148583-64-6)
- 2-(4-Chlorophenyl)oxazol-5(4H)-one (CAS 22887-53-2)
- 7-Methoxyimidazo[1,2-a]pyridine-3-carbaldehyde (CAS 896722-39-7)
- N-(2,3-Dimethylphenyl)-4-fluorobenzamide (CAS 349129-48-2)
- 2-((2-(3,4-Dichlorobenzylidene)-3-oxo-2,3-dihydrobenzofuran-6-yl)oxy)acetic acid (CAS 900894-52-2)
- Ethyl 5-amino-4-cyano-1-(3-methoxyphenyl)pyrazole-3-carboxylate (CAS 1150164-14-9)
- Tert-butyl (1-(3-bromobenzyl)piperidin-4-yl)carbamate (CAS 1286264-68-3)
- Neuropeptide SF (human) (CAS 192387-39-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com