L - tryptophan - EXTRA PURE , LABORATORY CHEMICALS, SPECIFICATION

SPECIFICATION
Used as a substrate in determination
of tryptophanase
C₁₁H₁₂N₂O₂ M.W. 204.23
Minimum assay ( HCIO₄ titration )	99%
Maximum Limits of Impurities :
Heavy metals ( as Pb )	0.001%
Ammonium ( NH₄ )	0.01%
Foreign amino acids	0.3%
Other ninhydrin - positive substances
( as glycine )	0.1%