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(-)-Scopolamine hydrochlorideCAS：55-16-3Molecular Formula：C17H21NO4.HCl -
DiethylnitrosamineCAS：55-18-5Molecular Formula：C4H10N2O -
BenzamideCAS：55-21-0Molecular Formula：C7H7NO -
Isonicotinic acidCAS：55-22-1Molecular Formula：C6H5NO2 -
DL-Norepinephrine hydrochlorideCAS：55-27-6Molecular Formula：C8H11NO3.HCl -
L-Epinephrine hydrochlorideCAS：55-31-2Molecular Formula：C9H13NO3.HCl;C9H14ClNO3 -
FenthionCAS：55-38-9Molecular Formula：C10H15O3PS2 -
Atropine sulfateCAS：55-48-1Molecular Formula：2(C17H23NO3).H2SO4 -
N,N-Bis(2-chloroethyl)benzenemethanamineCAS：55-51-6Molecular Formula：C11H15Cl2N -
4-Methylaminophenol sulfateCAS：55-55-0Molecular Formula：2(C7H9NO).H2SO4 -
ChlorhexidineCAS：55-56-1Molecular Formula：C22H30Cl2N10 -
NitroglycerinCAS：55-63-0Molecular Formula：C3H5N3O9 -
Phenylmercuric nitrateCAS：55-68-5Molecular Formula：C6H5HgNO3 -
4-MethoxyphenethylamineCAS：55-81-2Molecular Formula：C9H13NO -
Chlormethine hydrochlorideCAS：55-86-7Molecular Formula：C5H11Cl2N.HCl -
trans-4-Hydroxy-2-octenalCAS：55-88-9Molecular Formula：C8H14O2 -
NeoglaucitCAS：55-91-4Molecular Formula：C6H14FO3P -
BusulfanCAS：55-98-1Molecular Formula：C6H14O6S2 -
BiguanideCAS：56-03-1Molecular Formula：C2H7N5 -
MethylthiouracilCAS：56-04-2Molecular Formula：C5H6N2OS