Chemical name：Ademetionine 1,4-butanedisulfonate
MF：2C15H23N6O5S.2C4H10O6S2.C4H8O6S2
MW：1451.63
CAS：101020-79-5

Appearance White or light white powder  
Identification 1.The main peak retention time is consistent with the reference substance
                     2.Infrared atlas is consistent with reference substance
Optical rotation +28°~+34°
PH 1.0-3.0
Water 5.0%max
Ignition residue 0.3%~0.35% max
Heavy metal 0.002%max
HPLC 95%~105%
S-ADENOSYL-L-METHIONINE 55%min
1,4-Butanedisulfonate 40%max
Impurity (RRT≈1.2) 0.5%max
 5'-DEOXY-S-ADENOSYL-L-HOMOCYSTEINE 0.5%max
 Adenine 0.5%max
 5'-DEOXY-5'-METHYLTHIOADENOSINE 2.0%max
 individual impurity 0.1%max
 Total impurity 5.0%max
 L-Methioninedecarboxylase 1.75%max