13-09867. Tryptazan [Archived]

Nomenclature

CAS number: 526-30-7
α-Amino-1H-indazole-3-propanoic acid; α-amino-1H-indazole-3-propionic acid; 3-indazolealanine.
C10H11N3O2; mol wt 205.21.
C 58.53%, H 5.40%, N 20.48%, O 15.59%.

Description and references

Synthesis from isatin: Snyder et al., J. Am. Chem. Soc. 74, 2009 (1952).

Chemical structure

Derivative

Hemihydrate.

Properties

Crystals from water, darkens at 240°, dec 267-268°. pKa1 2.20; pKa2 8.95. Soly in water (g/100 ml): 0.8 at 29°; 12 at 100°; in 95% ethanol: 0.1 at 29°.

Status

This monograph has been retired and is no longer subject to revision or update.