An improved method for determining the a
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Hideo Nakagawa; Katsuro Shuto; Susumu Tsurufuji
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Article
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1978
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Elsevier Science
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English
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## Methods Reagents. Bz-Arg-NPhNO, was obtained from Seikagaku Kogyo Co., Ltd. Phenylmethylsulfonyl fluoride was purchased from Sigma. All other chemicals were reagent grade and commercially available. p-Dimethylaminobenzaldehyde reagent was prepared as follows: Concentrated sulfuric acid, 2.74 ml