L-Tryptophan (Ph. Eur., USP) pure, pharma grade

Assay (titr., calc. on dried subst.): 98.5 - 101.0 %

Recommended prices only. For prices and orders please contact your local distributor.
Box prices only valid with purchase of full box.

code	packaging size	price per unit	box price per unit
Code & packaging		Price per piece
code A1645,0100	packaging size 100 g	price per unit single $175,95	box price per unit
code A1645,0500	packaging size 500 g	price per unit single $603,15	box price per unit
code A1645,1000	packaging size 1 kg	price per unit single $1013,70	box price per unit

Product Code:: A1645
Product Name:: L-Tryptophan (Ph. Eur., USP) pure, pharma grade
Headline Comment:: • All amino acids from AppliChem are of non-animal origin!
Specifications:: Assay (titr., calc. on dried subst.): 98.5 - 101.0 %
α20°C/D; 1 %, H₂O, calc. on dried subst.: -33.0° - -30.0°
Appearance of solution: passes test
Identity: passes test
pH (1 %; H₂O; 20°C): 5.5 - 7.0
Heavy metals (as Pb): max. 0.0015 %
Sulfated ash: max. 0.1 %
Loss on drying (3 h; 105°C): max. 0.3 %
α25°C/D; 1 %, H₂O: -32.8° - -29.4°
Ammonium: max. 0.02 %
Chloride: max. 0.02 %
Sulfate: max. 0.03 %
Fe: max. 0.002 %
Ninhydrin positive substances (HPLC)
each individual impurity: max. 0.2 %
Total impurities: max. 0.5 %
Impurity A and other related subst. (HPLC)
Total impurity befor Tryptophan: max. 0.01 %
Total impurity afterTryptophan: max. 0.03 %
Impurity A: max. 0.001 %