Which LCMS-method is useful for find out the mass of tenofovir analogs using LCMS ?

Dear suman,

Abstract

A liquid chromatography-tandem mass spectrometry method for tenofovir

from plasma has been developed. Using Thermo ScientificTM SOLATM CX

plates, sample preparation is fast and efficient, giving excellent

recovery levels for the compound. Separation was carried out on a

Thermo ScientificTM Hypersil GOLDTM UHPLC column with a cycle time

of 3 minutes. Good chromatographic peak shape and linearity over the

dynamic range 1 to 1000 ng/mL was achieved with excellent recovery and

reproducibility.

MS Conditions

Instrumentation: Thermo ScientificTM TSQ VantageTM MS

Ionization conditions: HESI

Polarity: Positive

Spray Voltage (V): 3000

Vaporizer temp (°C): 350

Sheath gas pressure (Arb): 60

Aux gas pressure (Arb): 40

Capillary temp (°C): 300

Collision pressure (mTorr): 1.5

Scan time (s): 0.02

Q1 (FWHM) (Da): 0.7

Q3 (FWHM) (Da): 0.7

Compound: Tenofovir

Parent (m/z): 288.1

Products (m/z): 176.2

Collision energy: 24

S-lens: 115

Data Processing

Software: Thermo ScientificTM LCQUANTM