Category Research Guides

A certificate of analysis is a short document and most of it is header. The part that carries information is a chromatogram and a table of three or four rows. Once you know what those rows are measuring, you can…

The most common message any research supplier gets is some version of “my vial looks wrong”. The powder has slid down one side. It looks like a thin film rather than a cake. It looks melted. Or the vial looks…

Bacteriostatic water is the least interesting item in most orders and the one most often misunderstood. It is not a grade of purity, not a buffer, and not interchangeable with sterile water. It is water for injection with one additive,…

Almost everything sold alongside it in this catalogue is a peptide — a chain of amino acids joined by amide bonds. 5-Amino-1MQ is not. It is 5-amino-1-methylquinolinium, a small permanently charged heterocycle, and the difference is not pedantry. It changes…

In 1974 a Swiss group led by Schoenenberger and Monnier took blood from the cerebral veins of rabbits whose brains were being stimulated into slow-wave sleep, and found that something in the dialysate would induce delta-wave EEG activity when given…