Diphenhydramine and Pseudoephedrine - USP Method

LC Conditions

Column

Luna 5 µm CN 100 Å, LC Column 250 x 4.6 mm, Ea

Brand

Luna

Part No

00G-4255-E0

Phase Name

CN

Elution Type

Isocratic

Mobile Phase

A: Methanol

B: Acetonitrile

C: Water w/10mM heptane sulfonate and 13mM Triethylamine, pH 3.3

Gradient Profile

Step No.

Time(min)

%A

%B

1

0

10

26

Flow Rate

2.00 mL/min

Temperature

22°C

Detection

UV-Vis Abs.-Variable Wave.(UV) @ (22°C)

Detection Info