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

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

Recommended prices only. To see your prices l ogin or 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 117,30€	box price per unit
code A1645,0500	packaging size 500 g	price per unit single 402,10€	box price per unit
code A1645,1000	packaging size 1 kg	price per unit single 675,80€	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 %