Piperonal
CAS Number: 120-57-0
Molecular Formula: C8H6O3
Molecular Weight: 150.13

Tadalafil Impurity 20 2HCl
CAS Number: 406938-39-4(free base)
Molecular Formula: C19H18Cl2N2O4
Molecular Weight: 409.27

Tadalafil EP Impurity A
CAS Number: 171596-27-3
Molecular Formula: C22H19N3O4
Molecular Weight: 389.40

Tadalafil EP Impurity C
CAS Number: 171596-28-4
Molecular Formula: C22H19N3O4
Molecular Weight: 389.40

Tadalafil EP Impurity B
CAS Number: 629652-72-8
Molecular Formula: C22H19N3O4
Molecular Weight: 389.40

Duloxetine EP Impurity D
CAS Number: 90-15-3
Molecular Formula: C10H8O
Molecular Weight: 144.17

Lansoprazole EP Impurity A
CAS Number: 213476-12-1
Molecular Formula: C16H14F3N3O3S
Molecular Weight: 385.36

Lansoprazole EP Impurity B
CAS Number: 131926-99-3
Molecular Formula: C16H14F3N3O3S
Molecular Weight: 385.36