Canavanin is a basic amino acid of the constitutional formula NH2?C(NH)?NH?O?CH2?CH2?CH(NH2)?COOH, which was found in Jack bean by Kitagawa and Tomiyama. Canavanin is the first example of the compounds of a new chemical group, guanidoxy group NH2?C(NH)?NH?0-, which is not yet known in the literature of organic chemistry. Canalin is a mono-amino acid of the constitutional formula NH2?O?CH2-CH2?CH(NH2)?COOH, which is produced from canavanin, liberating one molecule of urea, by the action of the liver ferment, canavanase. Canalin is also the first instance for the deriv a tive of hydroxylamine to be found in nature.
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