X-atrial natriuretic factor
Xylitol, 2,3-diamino-1,5-anhydro-2,3-dideoxy-4-O-methyl- (9CI)
xylo-Hexodialdose, 2,5-anhydro-3,4-dideoxy-3-(hydroxymethyl)- (9CI)
Xanthylium, 3,6-bis(diethylamino)-9-(2,4-disulfophenyl)-, inner salt, lithium salt
xylo-Hexitol, 3-deoxy-, pentaacetate