Product Name L-Theanine Synonym H-GLU(NHET)-OH;H-GLN(ET)-OH;L-GLUTAMIC ACID GAMMA-(ETHYLAMIDE);L-GLUTAMIC ACID G-(ETHYLAMIDE);L-GAMMA-GLUTAMYLETHYLAMIDE;ETHYL-L-GLUTAMINE;N-GAMMA-ETHYL-L-GLUTAMINE;THEANINE Product No GIHI-20 Formula C7H14N2O3 Molecular Weight 174.2 CAS NO 3081-61-6 EINECS NO 221-379-0 Refractive index 8 ° (C=5, H2O) Melting Point 207°C