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API Impurities

Methyl o-toluenesulfonate

Reference StandardAvailable on request

Buy Methyl o-toluenesulfonate (CAS 23373-38-8) from Zemixal: C8H10O3S, COA and SDS with every lot, worldwide shipping. Part of our API Impurities range.

Pack sizes
Methyl o-toluenesulfonate chemical structure
CAS number23373-38-8
FormulaC8H10O3S
Molar mass186.23 g/mol
Physical formSolid
HS code38229090
InChIKeyAXCVRQKOVCRCIX-UHFFFAOYSA-N
IUPAC namemethyl 2-methylbenzenesulfonate

About Methyl o-toluenesulfonate

Researchers and plant chemists source Methyl o-toluenesulfonate from Zemixal for routine and specialised work. For your records (Reference Standard), the material is defined by CAS 23373-38-8, formula C8H10O3S and molar mass 186.23 g/mol. It is handled as a solid.

Use cases we see most often

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Handling and storage

Hazard communication follows GHS (Danger: H302, H311, H315 and H317). Our SDS lists exposure controls and first-aid measures.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. You receive a certificate of analysis with characterisation data with each order. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Typical uses

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of Methyl o-toluenesulfonate
Product nameMethyl o-toluenesulfonate
Catalogue numberZX-045652
CAS number23373-38-8
IUPAC namemethyl 2-methylbenzenesulfonate
Molecular formulaC8H10O3S
Molar mass186.23 g/mol
Exact mass186.0351
GradeReference Standard
Physical formSolid
XLogP31.6
H-bond donors / acceptors0 / 3
Topological polar surface area51.8 Ų
HS code38229090
InChIKeyAXCVRQKOVCRCIX-UHFFFAOYSA-N
SMILESCC1=CC=CC=C1S(=O)(=O)OC
PubChem CID90076
SynonymsBenzenesulfonic acid, 2-methyl-, methyl ester, 2-Methylbenzenesulfonic acid, methyl ester, Benzenesulfonic acid, methyl-, methyl ester, Methyl toluenesulfonate(mixture of isomers), methyl 2-methylbenzene-1-sulfonate, Benzenesulfonic acid,methyl-, methyl ester, Methyl 2-methylbenzenesulfonate #

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS06 Acute toxicity
Acute toxicity
GHS07 Irritant or harmful
Irritant or harmful
GHS08 Health hazard
Health hazard
GHS09 Hazardous to the environment
Hazardous to the environment

Signal word Danger

  • H302Harmful if swallowed
  • H311Toxic in contact with skin
  • H315Causes skin irritation
  • H317May cause an allergic skin reaction
  • H319Causes serious eye irritation
  • H331Toxic if inhaled
  • H335May cause respiratory irritation
  • H372Causes damage to organs through prolonged or repeated exposure
  • H411Toxic to aquatic life with long lasting effects

Precautionary statements P260, P261, P262, P264, P264 + P265, P270, P271, P272, P273, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P316, P319, P321, P330, P332 + P317, P333 + P317, P337 + P317, P361 + P364, P362 + P364, P391

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Methyl o-toluenesulfonate
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Methyl o-toluenesulfonate

Which CAS number identifies Methyl o-toluenesulfonate?
Methyl o-toluenesulfonate is registered under CAS 23373-38-8. You may also see it listed as Benzenesulfonic acid, 2-methyl-, methyl ester, 2-Methylbenzenesulfonic acid, methyl ester, Benzenesulfonic acid, methyl-, methyl ester. Our catalogue number for this item is ZX-045652.
What are the formula and molar mass of Methyl o-toluenesulfonate?
For Methyl o-toluenesulfonate, its formula is C8H10O3S and its molar mass is 186.23 g/mol. The systematic (IUPAC) name is methyl 2-methylbenzenesulfonate. InChIKey AXCVRQKOVCRCIX-UHFFFAOYSA-N lets you match it in any structure database.
What grade and pack sizes are available for Methyl o-toluenesulfonate?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Methyl o-toluenesulfonate?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Methyl o-toluenesulfonate to my country?
Yes. Because Methyl o-toluenesulfonate is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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