17930-82-4

Upstream product

• 68-11-1 mercaptoacetic acid 
• 75-05-8 acetonitrile 
• 3926-62-3 sodium monochloroacetic acid 
• 25142-27-2 1-(1-Carboxymethylmercapto-aethyliden)-piperidinium-bromid 

Downstream Products

• 56634-60-7 N-(2-Phenylsulfanyl-ethyl)-thioacetamide 
• 92876-50-1 Thioessigsaeure-(N²-cyclohexyl-hydrazid) 
• 27464-82-0 2,5-dimethyl-1,3,4-thiadiazole 
• 5310-10-1 N-methylthioacetamide 
• 92989-01-0 Thioessigsaeure-(N¹-benzyl-hydrazid) 
• 95074-47-8 Thioessigsaeure-(N¹-phenethyl-hydrazid) 
• 870-73-5 ethyl dithioacetate 
• 90057-44-6 Thioacetic acid [1-phenyl-meth-(E)-ylidene]-hydrazide 
• 120588-38-7 Thioacetic acid N'-(6-amino-3-p-tolyl-[1,2,4]triazin-5-yl)-hydrazide 
• 120588-39-8 Thioacetic acid N'-[6-amino-3-(4-chloro-phenyl)-[1,2,4]triazin-5-yl]-hydrazide 

Relevant academic research and scientific papers

A method for the chemical generation of N-terminal peptide sequence tags for rapid protein identification

We describe a method for generating multiple small sequences from the N terminal of peptides in unseparated protein digests by stepwise thioacetylation and acid cleavage. The mass differences between a series of N-terminally degraded peptides give short sequences of defined length. Such short sequence tags together with the mass of the parent peptide can be used to identify the protein in a database. The sequence ladders are generated without the use of chain terminators or sample aliquoting and the degradation reagents are water soluble so that the chemistry can be carried out on peptides immobilized on C-18 reversed-phase supports without any peptide loss due to washing with organic solvents as occurs in Edman type sequencing. The entire procedure can be automated, and we describe a prototype device for the parallel analysis of multiple samples. We demonstrate the effectiveness of this chemical tagging method in a comparison with Edman sequencing, peptide mass fingerprinting, and MS/MS analysis of crude protein fractions obtained from an HPLC separation of the Escherichia coli ribosome complex which consists of 57 proteins. We show that chemical tagging is a viable first-pass high-throughput identification method to be used prior to an in depth MS/MS analysis.

Syntheses and antitumor activities of N′1, N′3-dialkyl-N′1,N′3-di- (alkylcarbonothioyl) malonohydrazide: The discovery of elesclomol

A series of N′1,N′3-dialkyl- N′1,N′3-di(alkylcarbonothioyl) malonohydrazides have been designed and synthesized as anticancer agents by targeting oxidative stress and Hsp70 induction. Structure-activity relationship (SAR) studies lead to the discovery of STA-4783 (elesclomol), a novel small molecule that has been evaluated in a number of clinical trials as an anticancer agent in combination with Taxol.