Research Article

Spectroscopic Characterization of Omeprazole and Its Salts

Table 1

Carbon chemical shifts (ppm) of OMP and its salts.

C atomOMPOMP-NaOMP-KOMP-LiOMP-MgOMP-Ca

C158.9610.4311.7911.6111.9011.09

C1612.6012.3413.3414.4013.0013.54

C8, C17, C1857.8153.7552.7853.3552.5552.39
58.4859.2260.2358.7954.71
60.7460.05
61.79

C792.0299.0298.4097.1697.2196.59
98.67

C5112.94111.31108.39113.21109.31110.29
114.60117.08117.53116.78111.70

C4121.85125.11124.32126.82124.44116.60

C10, C12126.00127.41126.94129.49127.95125.82
127.56
128.98

C3a–C7a136.00139.30139.41139.62137.20137.67
139.44

C9–C13150.13147.33146.42147.18141.85144.56
150.71149.02147.15146.59
154.30150.59149.46147.78
149.47
151.29

C2–C6158.05158.24153.32155.48153.66153.63
157.18156.59157.868

C11164.41164.51163.05165.29164.01159.90
164.12164.22