TRAUMATIC SHOCK. II. THE PREPARATION OF CYSTINE, METHIONINE, AND HOMOCYSTINE CONTAINING RADIOACTIVE SULFUR

Abstract
Utilizing synthetic methods developed by du Vigneaud and coworkers and by Tarver and Schmidt, three amino acids containing radioactive sulfur were each prepared from 0.06 moles of BaSO4. Cystine was obtained in 17% yield, homocystine in 25% yield. The yield of methionine from homocysteine reported by Tarver and Schmidt was not duplicated. An improved method for preparing benzyl mercaptan from radioactive sulfur is described.