Guaifenesin Impurity A
CAS Number: 90-05-1
Molecular Formula: C7H8O2
Molecular Weight: 124.14

N-Nitrosodimethylamine
CAS Number: 62-75-9
Molecular Formula: C2H6N2O
Molecular Weight: 74.08

N-Nitrosoethylisopropylamine
CAS Number: 16339-04-1
Molecular Formula: C5H12N2O
Molecular Weight: 116.16

N-Nitrosodiisopropylamine
CAS Number: 601-77-4
Molecular Formula: C6H14N2O
Molecular Weight: 130.19

(3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone
CAS Number: 76855-69-1
Molecular Formula: C13H25NO4Si
Molecular Weight: 287.43

Methyl Methanesulfonate
CAS Number: 66-27-3
Molecular Formula: C2H6O3S
Molecular Weight: 110.13

Glycerol
CAS Number: 56-81-5
Molecular Formula: C3H8O3
Molecular Weight: 92.09

3-aminopropyl-[[5-(6-aminopurin-9-yl)-3,4-dihydroxy-oxolan-2-yl]methyl]- methyl-
CAS Number: 22365-13-5（free base）
Molecular Formula: C14H23N6O3S.XC4H9O6S2
Molecular Weight: 572.67