Trimethylsulfonium Iodide

About Trimethylsulfonium Iodide

Trimethylsulfonium Iodide is a process intermediate or related compound of Ascorbic acid carrying the CAS registry number 2181-42-2. Formula C3H9IS, molecular weight 204.08 g/mol. Systematically, it is named trimethylsulfanium iodide. Alternative names: Trimethylsulphonium iodide and Sulfonium, trimethyl-, iodide.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

Process chemists and analysts use it when developing synthetic routes to Ascorbic acid, tracking process-related impurities and validating analytical methods. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

API route development
Impurity fate & purge studies
Analytical method development
Fine chemical synthesis

Industries

Related to Ascorbic acid

View every impurity, metabolite and intermediate we list for Ascorbic acid.

Ascorbic acid impurities

Specifications & identifiers

Chemical identifiers
Product name	Trimethylsulfonium Iodide
Catalogue No.	VQ-019627
CAS Number	2181-42-2
IUPAC name	trimethylsulfanium iodide
Molecular formula	C₃H₉IS
Molecular weight	204.08 g/mol
Exact mass	203.947
InChIKey	VFJYIHQDILEQNR-UHFFFAOYSA-M
SMILES	C[S+](C)C.[I-]
PubChem CID	75127

Physical properties
Physical form	Solid
H-bond donors / acceptors	0 / 1
TPSA	1 Å²
Synonyms	Trimethylsulphonium iodide, Sulfonium, trimethyl-, iodide, Sulfonium, trimethyl-, iodide (1:1), S111 I, trimethylsulfanium,iodide, trimethyl sulphonium iodide

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

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 is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Trimethylsulfonium Iodide?

The CAS Registry Number of Trimethylsulfonium Iodide is 2181-42-2. It is also known as Trimethylsulphonium iodide, Sulfonium, trimethyl-, iodide, Sulfonium, trimethyl-, iodide (1:1).

What is the molecular formula and molecular weight of Trimethylsulfonium Iodide?

Trimethylsulfonium Iodide has the molecular formula C3H9IS and a molecular weight of 204.08 g/mol. Its IUPAC name is trimethylsulfanium iodide.

What is Trimethylsulfonium Iodide used for?

Trimethylsulfonium Iodide is supplied as a characterised reference material related to Ascorbic acid. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Trimethylsulfonium Iodide can I order?

We supply Trimethylsulfonium Iodide, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Trimethylsulfonium Iodide?

Yes. Every lot of Trimethylsulfonium Iodide is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Trimethylsulfonium Iodide be shipped internationally?

Yes. Trimethylsulfonium Iodide is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.