32751027 Gas is produced from at least one aldehyde.
32751028 Gas is produced from acetaldehyde.
32751029 Gas is produced from n-butyraldehyde.
32751030 Gas is produced from formaldehyde.
32751047 Gas is produced from o-hydroxybenzaldehyde (salicylaldehyde).
32751031 Gas is produced from hydroxypyruvic aldehyde.
32751032 Gas is produced from propionaldehyde.
32751033 Gas is produced from pyruvaldehyde.