Tert-Butyl Tosylate

Name: Tert-Butyl Tosylate
Brand: Vaqora Chemicals
SKU: VQ-013816

About Tert-Butyl Tosylate

Tert-Butyl Tosylate is a process intermediate or related compound of Bortezomib carrying the CAS registry number 4664-57-7 with a typical assay of 95%. Formula C11H16O3S, molecular weight 228.31 g/mol. Systematically, it is named tert-butyl 4-methylbenzenesulfonate. Common synonyms include 1,1-Dimethylethyl 4-methylbenzenesulfonate and tert-Butyl p-toluenesulfonate.

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. Good laboratory practice and suitable PPE are recommended during handling.

It is a process intermediate or related compound in the synthesis of Bortezomib, useful for route development, impurity fate-and-purge studies and analytical method development. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Tert-Butyl Tosylate in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide. This item is currently in stock for prompt dispatch.

Typical applications

API route development
Impurity fate & purge studies
Analytical method development

Industries

Related to Bortezomib

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

Bortezomib impurities

Specifications & identifiers

Chemical identifiers
Product name	Tert-Butyl Tosylate
Catalogue No.	VQ-013816
CAS Number	4664-57-7
IUPAC name	tert-butyl 4-methylbenzenesulfonate
Molecular formula	C₁₁H₁₆O₃S
Molecular weight	228.31 g/mol
Exact mass	228.082
Grade	Reference Standard
Purity / assay	95%
InChIKey	DLRDEMODNIPHMU-UHFFFAOYSA-N
SMILES	CC1=CC=C(C=C1)S(=O)(=O)OC(C)(C)C
PubChem CID	11009717

Physical properties
Physical form	Solid
LogP (XLogP3)	2.6
H-bond donors / acceptors	0 / 3
TPSA	51.8 Å²
Synonyms	1,1-Dimethylethyl 4-methylbenzenesulfonate, tert-Butyl p-toluenesulfonate, p-Toluenesulfonic acid tert-butyl ester, Benzenesulfonic acid, 4-methyl-, 1,1-dimethylethyl ester, tert-butyl 4-methylbenzene-1-sulfonate, tert-ButylTosylate, tert-Butyl-tosylat, synthesis-1-041

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 Tert-Butyl Tosylate?

The CAS Registry Number of Tert-Butyl Tosylate is 4664-57-7. It is also known as 1,1-Dimethylethyl 4-methylbenzenesulfonate, tert-Butyl p-toluenesulfonate, p-Toluenesulfonic acid tert-butyl ester.

What is the molecular formula and molecular weight of Tert-Butyl Tosylate?

Tert-Butyl Tosylate has the molecular formula C11H16O3S and a molecular weight of 228.31 g/mol. Its IUPAC name is tert-butyl 4-methylbenzenesulfonate.

What is Tert-Butyl Tosylate used for?

Tert-Butyl Tosylate is supplied as a characterised reference material related to Bortezomib. 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 Tert-Butyl Tosylate can I order?

We supply Tert-Butyl Tosylate in Reference Standard (95%) grade, in 10 mg, 25 mg, 50 mg, 100 mg, 250 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Tert-Butyl Tosylate?

Yes. Every lot of Tert-Butyl Tosylate 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 Tert-Butyl Tosylate be shipped internationally?

Yes. We export Tert-Butyl Tosylate worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.