(4R,5S,6S)- 4-nitrobenzyl-3-[[(3S,5S)-5-[(dimethylamino)carbonyl]-1-[[(4- nitrobenzyl) oxy] carbonyl] -3- pyrrolidinyl]thio] -6- [(1R) -1- hydroxyethyl] -4- methyl -7-oxo-1-azabicyclo[3,2,0]hept-2-ene-2-carboxylate or
3-[[5-[( dimethylamino)carbony pyrrolidinyl] thio] -6- (1-hydroxyethyl) -4- methyl -7- oxo -1- azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid, (4-nitrophenyl)methyl ester

Molecular Formula：C32H35N5O11S;
MW：697.71;
CAS No：[96036-02-1]
Appearance：power with white or alike color
Mp： 150-153℃（decompound）
[α]D20：+12- +16 (c=1, CH3OH)
Moisture：≤0.5%
Assay： ≥96% (HPLC)
Container：20kg/bucket
Reposition：0~20℃。