This is a partial list of molecules that contain 18 carbon atoms.
Chemical formula Synonyms CAS number C18F39N perfluorotrihexylamine 432-08-6 C18H8S4 tetrathianaphthacene 193-44-2 C18H10Cl2O2S2 c.i. vat red 1 2379-74-0 C18H10Cl2O2S2 c.i. vat violet 2 5462-29-3 C18H11N3O7 acenaphthene picric acid 4599-99-9 C18H12 chrysene 218-01-9 C18H12 naphthacene 92-24-0 C18H12 triphenylene 217-59-4 C18H12NO3 naptalam 132-66-1 C18H13ClN2O pinazepam 52463-83-9 C18H13O pentaethylacetophenone 500021-17-0 C18H14 dihydrochrysene 41593-31-1 C18H14 terphenyl 26140-60-3 C18H14ClFN2O3 ethyl loflazepate 29177-84-2 C18H14Cl4N2O miconazole 22916-47-8 C18H14O4 dicinnamoyl peroxide 15036-31-4 C18H15BrCoN2O2P triphenylphosphinecobalt dinitrosyl bromide 14318-88-8 C18H15BrFeN2O2P triphenylphosphineiron dinitrosyl bromide 38831-62-8 C18H15BrGe triphenylgermanium bromide 3005-32-1 C18H15ClSi triphenylchlorosilane 76-86-8 C18H15ClSn chlorotriphenyl tin 639-58-7 C18H15CoIN2O2P triphenylphosphinecobalt dinitrosyl iodide 14318-98-0 C18H15FSi fluorotriphenylsilane 379-50-0 C18H15FeIN2O2P triphenylphosphineiron dinitrosyl iodide 14588-79-5 C18H15ISn triphenyltin iodide 894-09-7 C18H15OP phenyl diphenylphosphinite 13360-92-4 C18H15O3P phenyl phosphonic acid diphenyl ester 3049-24-9 C18H15O4P triphenylphosphate 115-86-6 C18H15PSe triphenylphosphine selenide 3878-44-2 C18H16Cr benzenebiphenylchromium 12095-46-4 C18H16O2 cinnamyl cinnamate 122-69-0 C18H16O2 retenequinone 5398-75-4 C18H16O2Si dianisyldiethynylsilane 55986-09-9 C18H16O3 phenprocoumon 435-97-2 C18H16O4 dibenzyl maleate 62-26-0 C18H16O7 Several molecules – C18H16Sn triphenyltin hydride 892-20-6 C18H17ClN2O2 oxazolam 24143-17-7 C18H17Cl2NO3 benzoylprop ethyl 22212-55-1 C18H17NSi triphenylsilanamine 4215-80-9 C18H17O7 Several molecules – C18H18BrClN2O metaclazepam 65517-27-3 C18H18ClNS chlorprothixene 113-59-7 C18H18ClN2O2P fosazepam 35322-07-7 C18H18ClN3O loxapine 1977-10-2 C18H18ClN3S clothiapine 2058-52-8 C18H18N2O2 phenylalanylanhydride 2308-61-4 C18H18N2O5 ethyl azoxybenzenedicarboxylate 6421-04-1 C18H18O2 dienestrol 84-17-3 C18H18O2 equilenin acetate 517-09-9 C18H18O4 diphenyl adipate 3195-37-7 C18H19ClN4 clozapine 5786-21-0 C18H19F3N2S triflupromazine 146-54-3 C18H19N benzoctamine 17243-39-9 C18H19NO nordoxepin 1225-56-5 C18H19NOS duloxetine 116539-59-4 C18H19NO5 melicopicine 517-73-7 C18H20Cl2 perthane 72-56-0 C18H20N2S methdilazine 1982-37-2 C18H20N2S pyrathiazine 84-08-2 C18H20O2 diethylstilbestrol 56-53-1 C18H21ClN2 chlorcyclizine 82-93-9 C18H21NO azacyclonol 115-46-8 C18H21NO2 methyldesorphine 16008-36-9 C18H21NO3 codeine 76-57-3 C18H21NO3 hydrocodone 125-29-1 C18H21NO3 neopine 467-14-1 C18H21NO4 oxycodone 76-42-6 C18H21N3O dibenzepin 4498-32-2 C18H21OP diphenylcyclohexylphosphine oxide 13689-20-8 C18H22BrNO embramine 3565-72-8 C18H22ClNO chlorphenoxamine 77-38-3 C18H22ClNO phenoxybenzamine 59-96-1 C18H22N2 cyclizine 82-92-8 C18H22N2 desipramine 50-47-5 C18H22N2OS methoxypromazine 61-01-8 C18H22N2O2S oxomemazine 3689-50-7 C18H22N2S diethazine 60-91-3 C18H22N2S trimeprazine 84-96-8 C18H22O2 hexoestrol 84-16-2 C18H22O5 zearalenone 18695-28-8 C18H22O8 tetraethylpyromellitate 6634-01-1 C18H23N tolpropamide 5632-44-0 C18H23NO orphenadrine 83-98-7 C18H23NO3 dihydrocodeine 125-28-0 C18H23NO3 isoxsuprine 395-28-8 C18H23NO3 methyldihydromorphine 509-56-8 C18H23NO4 ethylbenzoylecgonine 529-38-4 C18H23NO5 seneciphylline 480-81-9 C18H23NO5 spartioidine 520-59-2 C18H23NO6 jacozine 5532-23-0 C18H23NO6 riddelliine 23246-96-0 C18H23NO7 senecicannabine 81855-31-4 C18H23N5O2 fenethylline 1892-80-4 C18H24 triamantane 13349-10-5 C18H24 estrin 1217-09-0 C18H24N2O6 dinocap 39300-45-3 C18H24O2 geranyl phenylacetate 102-22-7 C18H24O3 estriol 50-27-1 C18H24O6 butylphthalyl butyl glycolate 85-70-1 C18H25NO cyclazocine 3572-80-3 C18H25NO dextromethorphan 125-71-3 C18H25NO racemethorphan 510-53-2 C18H25NO2 allylprodine 25384-17-2 C18H25NO5 doronenine 74217-57-5 C18H25NO5 integerrimine 480-79-5 C18H25NO5 senecionine 130-01-8 C18H25NO5 triangularine 87340-27-0 C18H25NO6 retrorsine 480-54-6 C18H25NO6 usaramine 15503-87-4 C18H26ClNO6 jaconine 480-75-1 C18H26ClN3 chloroquine 54-05-7 C18H26ClN3O hydroxychloroquine 118-42-3 C18H26O versalide 88-29-9 C18H26O2 cynmethylin 87818-31-3 C18H26O4 dipentyl terephthalate 1818-95-7 C18H26O4 heptyl benzyl succinate 119450-15-6 C18H26O12 hexaacetylmannitol 5346-76-9 C18H27NO2 caramiphen 77-22-5 C18H27NO4 etoxeridine 469-82-9 C18H27NO5 platyphylline 480-78-4 C18H27NO5 propanidid 1421-14-3 C18H27NO6 rosmarinine 520-65-0 C18H27NO7 jacoline 480-76-2 C18H27NO7 sceleratine 6190-25-6 C18H27N3O pentaquin 86-78-2 C18H27P dicyclohexylphenylphosphine 6476-37-5 C18H28 cyclododecylbenzene 15971-88-7 C18H28N2O4 acebutolol 37517-30-9 C18H28N2O3S almokalant 123955-10-2 C18H28N4O butalamine 22131-35-7 C18H28O dodecanophenone 1674-38-0 C18H29NO2 ketocaine 1092-46-2 C18H29NO3 amprotropine 148-32-3 C18H29NO4 guaiapate 852-42-6 C18H30 perhydrochrysene 2090-14-4 C18H30BaCa2O12 barium dicalcium propionate 17115-98-9 C18H30Ca2O12Pb lead dicalcium propionate 17203-66-6 C18H30Ca2O12Sr strontium dicalcium propionate 54993-39-4 C18H30 estrane C18H30O farnesyl acetone 1117-52-8 C18H30O linolenyl aldehyde 2423-13-4 C18H30O2 alpha-linolenic acid 463-40-1 C18H30O2 gamma-linolenic acid 506-26-3 C18H30O4 dicyclohexyl adipate 849-99-0 C18H32O linoleyl aldehyde 2541-61-9 C18H32O2 linoleic acid 60-33-3 C18H32O2 linoelaidic acid 506-21-8 C18H32O2 stearolic acid 506-24-1 C18H32O2S triprene 40596-80-3 C18H32O7 butyl citrate 77-94-1 C18H33Cl3O2 hexadecyl trichloroacetate 74339-54-1 C18H33NO linoleamide 3999-01-7 C18H34N2O6S lincomycin 154-21-2 C18H34O cyclooctadecanone 6907-37-5 C18H34O2 oleic acid 2027-47-6 C18H34O3 castor oil 8001-79-4 C18H34O3 ricinoleic acid 141-22-0 C18H34O4 octadecanedioic acid 871-70-5 C18H35BrO2 hexadecyl bromoacetate 5454-48-8 C18H35ClO stearic acid chloride 112-76-5 C18H35ClO2 hexadecyl chloroacetate 52132-58-8 C18H35N octadecanenitrile 638-65-3 C18H35NO elaidamide 4303-70-2 C18H35O2Tl thallium octadecanoate 33734-56-4 C18H36 cyclooctadecane 296-18-4 C18H36 dodecylcyclohexane 1795-17-1 C18H36 hexaethylcyclohexane 98803-61-3 C18H36N2NiS4 nickel diisobutyldithiocarbamate 15317-78-9 C18H36O oleyl alcohol 143-28-2 C18H36O stearaldehyde 638-66-4 C18H36O2 hexyl dodecanoate 34316-64-8 C18H36O2 octadecanoic acid 57-11-4 C18H36O3 octadecaneperoxoic acid 5796-86-1 C18H37NO octadecanamide 124-26-5 C18H37NO5 sarracine 2492-09-3 C18H38 octadecane 593-45-3 C18H38N2O stearic acid hydrazide 4130-54-5 C18H38O4Si2 dodecanedioic acid di tms 22396-19-6 C18H38O7 hexapropylene glycol 52794-80-6 C18H38S dinonyl sulfide 929-98-6 C18H39BrSi bromotrihexylsilane 11643-50-8 C18H39N dinonylamine 2044-21-5 C18H39O3P trihexyl phosphite 6095-42-7 C18H41NO2Si2 leucine ditbdms 92771-65-8 C18H54Si8 octadecamethyloctasilane 3704-48-1
See also Carbon number List of compounds with carbon number 17 List of compounds with carbon number 19
References