CAS Number: 31677-93-7
Chemical Name: Bupropion Hydrochloride
Molecular Formula: C13H19Cl2NO
Molecular Weight: 276.2

CAS Number: 233600-52-7
Chemical Name: Hydroxybupropion (as (RS,RS)-cyclic Hemiketal)
Molecular Formula: C13H18ClNO2
Molecular Weight: 255.74