Terbufos

Name: Terbufos
Brand: Vaqora Chemicals
SKU: VQ-049474

About Terbufos

Vaqora Chemicals supplies Terbufos, a process intermediate or related compound of Allopurinol registered under CAS number 13071-79-9. Formula C9H21O2PS3, molecular weight 288.4 g/mol. The IUPAC name is tert-butylsulfanylmethylsulfanyl-diethoxy-sulfanylidene-lambda5-phosphane. Common synonyms include Counter 15G soil insecticide and St-100.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is a process intermediate or related compound in the synthesis of Allopurinol, useful for route development, impurity fate-and-purge studies and analytical method development. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

We offer Terbufos in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

API route development
Impurity fate & purge studies
Analytical method development

Industries

Related to Allopurinol

View every impurity, metabolite and intermediate we list for Allopurinol.

Allopurinol impurities

Specifications & identifiers

Chemical identifiers
Product name	Terbufos
Catalogue No.	VQ-049474
CAS Number	13071-79-9
IUPAC name	tert-butylsulfanylmethylsulfanyl-diethoxy-sulfanylidene-lambda5-phosphane
Molecular formula	C₉H₂₁O₂PS₃
Molecular weight	288.4 g/mol
Exact mass	288.0441
InChIKey	XLNZEKHULJKQBA-UHFFFAOYSA-N
SMILES	CCOP(=S)(OCC)SCSC(C)(C)C
PubChem CID	25670

Physical properties
Physical form	Solid
LogP (XLogP3)	4.5
H-bond donors / acceptors	0 / 5
TPSA	101 Å²
Synonyms	Counter 15G soil insecticide, St-100, Counter 15G, Phosphorodithioic acid S-((tert-butylthio)methyl) O,O-diethyl ester, S-tert-Butylthiomethyl O,O-diethyl phosphorodithioate, S-(((1,1-Dimethylethyl)thio)methyl) O,O-diethyl phosphorodithioate, S-(((1,1-Dimethylethyl)thio)methyl)-O,O-diethyl phosphorodithioate, Phosphorodithioic acid, S-[[(1,1-dimethylethyl)thio]methyl] O,O-diethyl ester, S-((tert-Butylthio)methyl)O,O-diethylphosphorodithioate, Phosphorodithioic acid S-(((1,1-dimethylethyl)thio)methyl) O,O-diethyl ester, S-[(tert-butylsulfanyl)methyl] O,O-diethyl phosphorodithioate, Phosphorodithioic acid, S-(((1,1-dimethylethyl)thio)methyl) O,O-diethyl ester

Safety & hazard information (GHS)

Toxic

Environmental hazard

Signal word: Danger

Hazard statements

H300Fatal if swallowed
H310Fatal in contact with skin
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P262, P264, P270, P273, P280, P301 + P316, P302 + P352, P316, P321, P330, P361 + P364, P391, 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 Terbufos?

The CAS Registry Number of Terbufos is 13071-79-9. It is also known as Counter 15G soil insecticide, St-100, Counter 15G.

What is the molecular formula and molecular weight of Terbufos?

Terbufos has the molecular formula C9H21O2PS3 and a molecular weight of 288.4 g/mol. Its IUPAC name is tert-butylsulfanylmethylsulfanyl-diethoxy-sulfanylidene-lambda5-phosphane.

What is Terbufos used for?

Terbufos is supplied as a characterised reference material related to Allopurinol. 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 Terbufos can I order?

We supply Terbufos, 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 Terbufos?

Yes. Every lot of Terbufos 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 Terbufos be shipped internationally?

Yes. Terbufos 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.