Fmoc-amino acids were obtained from GL Biochem (Shanghai, China). All the other Starting materials were obtained from Alfa. Chemical reagents and solvents were used as received from commercial sources.

New diamine coordination compounds with phenyllithium and allyllithium are presented. One of them is the first diamine complex containing two different, simple organolithium reagents. The formation of this unexpected compound is explained using quantum chemical calculations.

In the paper by Asiri et al. [Acta Cryst. (2012), E68, o1154], the title and the chemical name of one of the reagents used in the synthesis are corrected.[This corrects the article DOI: 10.1107/S1600536812011579.].

A new dual-ion-switched molecular brake was synthesized and operated by chemical reagents (H+/OH- and Zn2+/EDTA), and its rotation could be read out by chromogenic, fluorogenic and electrochemical signals.

Controlled site-selective glycosylation can be achieved by combining site-directed cysteine mutagenesis with chemical modification of the introduced thiol; a new class of more efficient chemoselective reagents, glycosyl phenylthiosulfonates, allow rapid glycosylations of representative simple thiols, peptides and proteins.

A Laboratory Manual for the Preparation of Chemical Reagents, Solutions and Special Indicators. ETHIOPIAN BIODIVERSITY INSTITUTE, Microbial Biodiversity Directorate. This manual includes detailed view following: Safety Precautions, Reagent Preparation, Buffer Solution Staining Indicators Dye Known Suspected List Carcinogens References.

The engineering of proteins can illuminate their biological function and improve their performance in a variety of applications. Within the past decade, methods have been developed that facilitate the ability of chemists to manipulate proteins in a controlled manner. Here, we present the traceless Staudinger ligation as a strategy for the convergent chemical synthesis of proteins. This reaction...

A novel one-pot tandem biohydrogen transfer process to concurrently obtain two enantiopure sec-alcohols is presented; thus, using a suitable single enzyme and a catalytic amount of cofactor, several interesting building blocks could be easily achieved in an enantiocomplementary fashion, minimizing dramatically the quantity of reagents usually employed in the "coupled-substrate" approach.

Two simple, specific, accurate, precise, sensitive and cost effectivespectrophotometric methods have been developed and validated for quantification oflinagliptin in pure form and pharmaceutical formulations. Method A is established onthe computation of absorbance of purple coloured chromogen complex at 463 nmwhich is formed by the condensation reaction of the primary amine group oflinagliptin ...

We present a new microfluidic platform for the study of enzymtatic reactions using static droplets on demand. This allows us to monitor both fast and slow reactions with the same device and minute amounts of reagents. The droplets are produced and displaced using confinement gradients, which allows the experiments to be performed without having any mean flow of the external phase. Our device is...