L-Tryptophan

SKU : AMA033
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CAS number

73-22-3

molecular formula

C11H12N2O2

standard

USP33

Package

25kg/drum
ITEMS LIMIT
 State of solution  Not Less Than 98.0%
(Transmittance)
 PH  5.5~6.5
 Specific rotation [α]D20°  -30.0~-32.5.
 Ammonnium(NH4)  Not More Than 0.02%
 Chloride content    Not More Than 0.02%
 Sulfate(SO4) Not More Than 0.02% 
 lron(Fe)  Not More Than 0.002%
 Heavy metals(as Pb)  Not More Than 0.001%
 Arsenic (As2O3)  Not More Than 0.0001%
 Loss on drying  Not More Than 0.2%
 Resdue on ignition   Not More Than 0.1%
 Foreign amino acids  Not More Than 0.5%
 Pyrogen*  Free
 Assay (dry basis)  99.0~101.0%

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