4-Chloro-3-(methylthio)benzoicacid CAS 166811-60-5
| CAS No. | 166811-60-5 |
| Molecular Formula | C8H7ClO2S |
| Molecular Weight | 202.66 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 4-Chloro-3-(methylthio)benzoicacid (CAS 166811-60-5), a certified reference material (molecular formula C8H7ClO2S, MW 202.66 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H7ClO2S, 4-Chloro-3-(methylthio)benzoicacid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 202.66 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures 4-Chloro-3-(methylthio)benzoicacid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H7ClO2S |
| Molecular Weight | 202.66 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-4-(methylsulfanyl)benzoic acid (CAS 1079360-49-8)
- 7-Chloro-2,3-dihydro-1,4-benzodioxine-6-thiol (CAS 1152581-30-0)
- 3-Chloro-4-(methylsulfanyl)benzoic acid (CAS 121120-08-9)
- 1-(5-Chloro-2-(methylthio)pyrimidin-4-yl)ethanone (CAS 122372-21-8)
- 5-Chloro-4-cyclopropylthiophene-2-carboxylic acid (CAS 1252900-85-8)
- methyl 2-chloro-5-sulfanylbenzoate (CAS 1384427-27-3)
- 3-Chloro-2-(methylthio)benzoic acid (CAS 147460-60-4)
- 5-Chloro-N,N-diethyl-3-fluoropyridin-2-amine (CAS 1504056-40-9)
Recommended Standards
- Trimethylsilyl 2-chloro-2,2-difluoroacetate (CAS 1700654-90-5)
- 2-Chloro-7,8-dihydro-3H-thiopyrano[4,3-d]pyrimidin-4(5H)-one (CAS 1781343-97-2)
- 2-Chloro-3-(methylsulfanyl)benzoic acid (CAS 1805648-85-4)
- o-Chlorophenyl thioacetate (CAS 18619-18-6)
- Morpholine-2-carboxylic acid [2-(3,5-dimethyl-1H-pyrazol-4-yl)-ethyl]-amide dihydrochloride (CAS 1361111-31-0)
- (3R,4R)-1-benzyl-4-(hydroxymethyl)piperidin-3-ol (CAS 39478-61-0)
- 2-(2-Aminopyridin-3-yl)ethan-1-ol (CAS 954240-84-7)
- (5E)-3-(4-Chlorophenyl)-5-{[4-(propan-2-yl)phenyl]methylidene}-2-sulfanylidene-1,3-thiazolidin-4-one (CAS 882082-92-0)
- 2,6-Dimethoxy-5-nitronicotinic acid (CAS 685879-38-3)
- Cis-2,6-bis(4-methoxyphenyl)dihydro-2H-selenopyran-4(3H)-one (CAS 54232-40-5)
- 3-(Tert-butoxy)-3-oxopropane-1-sulfinic acid (CAS 77711-07-0)
- H-D-Homoser-OH (CAS 6027-21-0)
- 2-Cyclopropoxy-5-methoxyaniline (CAS 1243386-15-3)
- Semaglutide impurity 198 (CAS CATO-C4X-2226198)
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