Carbonyl compounds standard

Glyoxal mono-2,4-dinitrophenylhydrazone, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 13059-68-2

(4-Methoxyphenyl)-(1-pentyl-1H-indol-3-yl)methanone, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no.

Ammonia as (NH4+)