Chemicals
Reference; Favipiravir, was supplied from Kohn&Shawn Pharmatech Co.,
Ltd.,China., (Batch No: KSY34-22-20200415) and Internal Standard;
[13C15N] Favipiravir (IS), was supplied from AlsaChim,
(MJ-ALS-20-026-P2), France.
Solvents: Methanol and acetonitrile were supplied from Merck, Germany.
Ultrapure (Type 1) Water was supplied from Milipore MilliQ Water
Purification System; K2Edta Blank Human Plasma was supplied from Bioivt
Laboratories International Ltd, UK.