Analytical Chemistry

Chiral Amino Acid Analysis Using LC/MS

This article was written by Sachise Karakawa, Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., for Vol. 92, No. 1 (January 2023) of Wako Junyaku Jiho.

Amino acids are the building blocks of proteins, and have various physiological functions related to neurotransmission, immunity, etc. Apart from glycine, amino acids have optical isomers (isomers wit...

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Analytical Chemistry

The Story of the Development of CTX-ELISA 1B

The original article was written by Masahiro Hirama, Professor Emeritus of Tohoku University, and Acroscale Ltd. (Glytech, Inc.) for Vol. 07 (December 2018) of ChemGrowing.
This article has been translated from the above Japanese version by Fujifilm Wako.

Scientific research, chemistry in particular, originates from "curiosity and ambition" to "create or discover" "something interesting," and makes great progress when "time, advantage of position, and ...

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Analytical Chemistry

Risk Assessment and Control in the Guideline for Elemental Impurities in Drugs

The original article by Rina Nishioka, Soichiro Hanakawa of the Sumika Chemical Analysis Service, Ltd., appeared in an e-newsletter of FUJIFILM Wako Pure Chemical Corporation and was translated by the company.

A regulatory guideline for elemental impurities in drug products was formulated by the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH). In Jap...

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Analytical Chemistry

Effects of Trace Metals (Impurities) in Chemicals Used in Semiconductor Manufacture and Their Analysis

The original article by Yukihisa Kawada of the FUJIFILM Corporation, appeared in an e-newsletter of FUJIFILM Wako Pure Chemical Corporation and was translated by the company.

In recent years, the manufacturing process for semiconductors has become increasingly complex in order to meet the technical requirements for smaller size and higher performance. In this situation, qu...

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Analytical Chemistry

Arsenic compounds contained in various foods

Arsenic (As) is an element occurring in the Earth's crust mainly as sulfides such as As3S3, As4S4, and FeAsS. Because it is released into the environment through natural phenomena such as volcanic act...

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