– belladonna alkaloids – atropine – scopolamine – capsaicin – nicotine – solanine – tomatine – sparteine – swainsonine – tropanes – belladonna alkaloids – atropine – atropine derivatives – ipratropium – benztropine – cocaine – crack cocaine – scopolamine – scopolamine derivatives – butylscopolammonium bromide – n-methylscopolamine – veratrum alkaloids – cevanes – germine acetates – protoveratrines – veratrine – veratridine – heterocyclic compounds, 1-ring – azepines – caprolactam – dilazep – meptazinol – oxazepines – pentylenetetrazole – thiazepines – zolazepam – azetines – azetidines – azetidinecarboxylic acid – azirines – aziridines – carbazilquinone – triaziquone – triethylenemelamine – triethylenephosphoramide – thiotepa – mitomycins – mitomycin – porfiromycin – azocines – cyclazocine – ethylketocyclazocine – oxazocines – nefopam – azoles – imidazoles – aminoimidazole carboxamide – antazoline – biotin – bis(4-methyl-1-homopiperazinylthiocarbonyl)disulfide – 4-(3-butoxy-4-methoxybenzyl)-2-imidazolidinone – carbimazole – cimetidine – clotrimazole – creatinine – dacarbazine – dexmedetomidine – econazole – enoximone – etimizol – etomidate – fadrozole – fluspirilene – histamine – methylhistamines – histidinol – hydantoins – allantoin – dantrolene – mephenytoin – phenytoin – thiohydantoins – phenylthiohydantoin – idazoxan – imidazolidines – ethylenethiourea – imidazolines – clonidine – tolazoline – impromidine – levamisole – losartan – medetomidine – methimazole – miconazole – naphazoline – niridazole – nitroimidazoles – dimetridazole – etanidazole – ipronidazole – metronidazole – misonidazole – nimorazole – ornidazole – ronidazole – tinidazole – ondansetron – oxymetazoline – phentolamine – tetramisole – trimethaphan – urocanic acid – isoxazoles – alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid – cycloserine – ibotenic acid – isocarboxazid – oxazoles – aminorex – dimethadione – fura-2 – muscimol – oxadiazoles – 5-amino-3-((5-nitro-2-furyl)vinyl)-1,2,4-oxadiazole – 4-chloro-7-nitrobenzofurazan – quisqualic acid – sydnones – molsidomine – oxazolidinones – cycloserine – furazolidone – nifuratel – oxazolone – pemoline – trimethadione – pyrazoles – betazole – 4,5-dihydro-1-(3-(trifluoromethyl)phenyl)-1h-pyrazol-3-amine – epirizole – indazoles – benzydamine – granisetron – muzolimine – oxypurinol – pyrazolones – aminopyrine – ampyrone – dipyrone (metamizole) – antipyrine – phenylbutazone – oxyphenbutazone – prenazone – sulfinpyrazone – pyrroles – cromakalim – maleimides – ethylmaleimide – porphobilinogen – prodigiosin – pyrrolnitrin – tetrapyrroles – bile pigments – bilirubin – biliverdine – urobilin – urobilinogen – chlorophyll – bacteriochlorophylls – chlorophyllides – pheophytins – protochlorophyllide – corrinoids – vitamin b 12 – cobamides – hydroxocobalamin – porphyrins – coproporphyrins – deuteroporphyrins – etioporphyrins – hematoporphyrins – hematoporphyrin derivative – dihematoporphyrin ether – mesoporphyrins – metalloporphyrins – chlorophyll – bacteriochlorophylls – chlorophyllides – protochlorophyllide