o-Toluenesulfonic Acid

Name: o-Toluenesulfonic Acid
Brand: Zemixal
SKU: ZX-031307

Reference StandardAvailable on request

Buy o-Toluenesulfonic Acid (CAS 88-20-0) from Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-031307.

Pack sizes

o-Toluenesulfonic Acid chemical structure

CAS number88-20-0

FormulaC₇H₈O₃S

Molar mass172.2 g/mol

Physical formSolid

HS code38229090

InChIKeyLBLYYCQCTBFVLH-UHFFFAOYSA-N

IUPAC name2-methylbenzenesulfonic acid

About o-Toluenesulfonic Acid

Analytical teams working on Edoxaban use o-Toluenesulfonic Acid as a qualified comparison standard. For your records (Reference Standard), the material is defined by CAS 88-20-0, formula C7H8O3S and molar mass 172.2 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

It carries the GHS signal word Warning (H315, H319 and H335), so wear gloves and eye protection and work with good ventilation.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Every shipment includes a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Edoxaban

See every impurity, metabolite and related compound we list for this API.

Edoxaban standards

Typical uses

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

Applications

Pharmaceutical Manufacturing and QC Research Labs and Universities

Specifications and identifiers

Specifications of o-Toluenesulfonic Acid
Product name	o-Toluenesulfonic Acid
Catalogue number	ZX-031307
CAS number	88-20-0
IUPAC name	2-methylbenzenesulfonic acid
Molecular formula	C₇H₈O₃S
Molar mass	172.2 g/mol
Exact mass	172.0194
Grade	Reference Standard
Physical form	Solid
XLogP3	1
H-bond donors / acceptors	1 / 3
Topological polar surface area	62.8 Å²
HS code	38229090
InChIKey	LBLYYCQCTBFVLH-UHFFFAOYSA-N
SMILES	CC1=CC=CC=C1S(=O)(=O)O
PubChem CID	6925
Synonyms	Toluene-2-sulfonic acid, Benzenesulfonic acid, 2-methyl-, 2-Toluenesulfonic acid, Toluene-2-sulphonic acid, 2-methylbenzene-1-sulfonic acid, 2-Methyl Benzenesulfonic acid, toluensulfonic acid, toluene-sulfonic acid, toluene sulphonic acid, 2-toluene-sulfonic acid, 2-methylbenzenesulfonicacid

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

Safety and GHS hazards

Irritant or harmful

Signal word Warning

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

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 o-Toluenesulfonic Acid
10 mg	Quoted on request
25 mg	Quoted on request
50 mg	Quoted on request
100 mg	Quoted on request

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

Questions about o-Toluenesulfonic Acid

Which CAS number identifies o-Toluenesulfonic Acid?

o-Toluenesulfonic Acid is registered under CAS 88-20-0. You may also see it listed as Toluene-2-sulfonic acid, Benzenesulfonic acid, 2-methyl-, 2-Toluenesulfonic acid. Our catalogue number for this item is ZX-031307.

What are the formula and molar mass of o-Toluenesulfonic Acid?

For o-Toluenesulfonic Acid, its formula is C7H8O3S and its molar mass is 172.2 g/mol. The systematic (IUPAC) name is 2-methylbenzenesulfonic acid. InChIKey LBLYYCQCTBFVLH-UHFFFAOYSA-N lets you match it in any structure database.

How is o-Toluenesulfonic Acid used in pharmaceutical QC?

o-Toluenesulfonic Acid is a characterised reference material linked to Edoxaban. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.

What grade and pack sizes are available for o-Toluenesulfonic Acid?

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 o-Toluenesulfonic Acid?

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 o-Toluenesulfonic Acid to my country?

Yes. Because o-Toluenesulfonic Acid 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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