Pharmaceutical Reference Standards / Impurity Standards

Favipiravir
6-Fluoro-3-hydroxypyrazine-2-carboxylic acid
6-Fluoro-3-hydroxypyrazine-2-carbonitrile
Favipiravir Chloro Homolog Impurity
3 Hydroxy 6 methoxypyrazine 2 carborxamide
Favipiravir Impurity 18
Favipiravir Impurity 19
6-Fluoro-pyrazine-2-carbonitrile
Favipiravir Impurity 9
6-chloro-3-hydroxypyrazine-2-carbonitrile
6-Bromo-3-hydroxypyrazine-2-carboxamide
6-chloro-3-hydroxypyrazine-2-carboxamide
6-ethoxy-3-hydroxypyrazine-2-carboxamide
6-Chloro-3-fluoropyrazine-2-carbonitrile.
Favipiravir Impurity 6
Favipiravir Impurity 17
Favipiravir Impurity 21
6-Chloro-2-methylpyrimidin-4-ol
Favipiravir Impurity E

Isotope Labelled Compounds

[13C,15N]-Favipiravir
Favipiravir D4