Thiodiglycolic anhydride

Name: Thiodiglycolic anhydride
Brand: Vaqora Chemicals
SKU: VQ-042498

About Thiodiglycolic anhydride

Vaqora Chemicals supplies Thiodiglycolic anhydride, an API reference standard registered under CAS number 3261-87-8. The compound has the formula C4H4O3S, corresponding to a molecular weight of 132.14 g/mol. The IUPAC name is 1,4-oxathiane-2,6-dione. Alternative names: 1-Oxa-4-thia-cyclohexan-2,6-dione and 1,4-Oxathiane-2,6-dione #.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

As a reference sample of the parent drug substance, it is used for identification, assay and impurity-profiling work during analytical method development, validation (AMV) and routine QC. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Thiodiglycolic anhydride is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material
Fine chemical synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Thiodiglycolic anhydride
Catalogue No.	VQ-042498
CAS Number	3261-87-8
IUPAC name	1,4-oxathiane-2,6-dione
Molecular formula	C₄H₄O₃S
Molecular weight	132.14 g/mol
Exact mass	131.9881
Grade	Reference Standard
HSN code	38229090
InChIKey	RIIUAPMWDSRBSH-UHFFFAOYSA-N
SMILES	C1C(=O)OC(=O)CS1
PubChem CID	137871

Physical properties
Physical form	Solid
LogP (XLogP3)	0.4
H-bond donors / acceptors	0 / 4
TPSA	68.7 Å²

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302+H312Harmful if swallowed or in contact with skin
H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation

Precautionary statements: P260, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P316, P317, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P363, P403 + P233

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 Thiodiglycolic anhydride?

The CAS Registry Number of Thiodiglycolic anhydride is 3261-87-8. It is also known as 1-Oxa-4-thia-cyclohexan-2,6-dione, 1,4-Oxathiane-2,6-dione #, Thiodiglycolic anhydride, AldrichCPR.

What is the molecular formula and molecular weight of Thiodiglycolic anhydride?

Thiodiglycolic anhydride has the molecular formula C4H4O3S and a molecular weight of 132.14 g/mol. Its IUPAC name is 1,4-oxathiane-2,6-dione.

Which grade and pack sizes of Thiodiglycolic anhydride can I order?

We supply Thiodiglycolic anhydride in Reference Standard grade, 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 Thiodiglycolic anhydride?

Yes. Every lot of Thiodiglycolic anhydride 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 Thiodiglycolic anhydride be shipped internationally?

Yes. Thiodiglycolic anhydride 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.