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    —— 4-chloro-5-methyl-3-oxo-3<i>H</i>-isoxazole-2-carboxylic acid diethylamide 41643-97-4 C9H13ClN2O3
    —— 4-(8-chloro-10,11-dihydro-dibenzo[<i>b</i>,<i>f</i>]thiepin-10-yl)-piperazin-1-ol 63186-71-0 C18H19ClN2OS
    —— 4-isoquinolin-5-ylmethyl-piperazine-2-carboxylic acid 2-fluorobenzylamide 1021485-43-7 C22H23FN4O
    —— 4-isoquinolin-5-ylmethyl-piperazine-2-carboxylic acid 2-chloro-6-methylbenzylamide 1021485-37-9 C23H25ClN4O
    —— 4-isoquinolin-5-ylmethyl-piperazine-2-carboxylic acid 3-fluorobenzylamide 1021485-44-8 C22H23FN4O
    —— 4-Chloro-6-(5-ethyl-[1,3,4]oxadiazol-2-yl)-5-isopropyl-pyrrolo[2,1-f][1,2,4]triazine 1036963-18-4 C13H14ClN5O
    —— 4-Formyl-2-hexyl-buttersaeure 3507-83-3 C11H20O3
    —— 4-(4-chlorophenylazo)phenoxy acetic acid 2703-30-2 C14H11ClN2O3
    —— 4-Isopropyl-hexahydro-cyclopenta[e][1,3]oxazin-2-one 122717-11-7 C10H17NO2
    —— 4,5,6,7-tetraethyl-2-methyl-2,3,3a,4,7,7a-hexahydro-1H-isoindole-1,3-dione 1156543-40-6 C17H27NO2
    —— 4-[[4-[1-(Pyridin-4-ylmethyl)piperidin-4-yl]oxypiperidin-1-yl]methyl]pyridin-2-amine 1138447-81-0 C22H31N5O
    —— 4,4‴-bis(2,3,4,5,6-pentamethylphenyl)-1,1′:4′,1″:4″,1‴-quaternaphthalene 1448855-11-5 C62H54
    —— 4-(5-cyclopropylmethoxy-benzo[1,3]dioxol-4-yl)-5H-pyrrolo[3,2-d]pyrimidine-7-carboxylic acid [1-(2-methoxy-acetyl)-pyrrolidin-3-ylmethyl]-amide 1185838-84-9 C26H29N5O6
    —— 4-(2,3-dihydro-benzo[1,4]dioxin-6-ylamino)-6-[(thiophen-2-ylmethyl)-amino]-[1,3,5]triazine-2-carbonitrile 1174117-51-1 C17H14N6O2S
    —— 4-methoxymethyl-thiophene-2-carboxylicacid(5-methyl-1-pyridin-2-ylmethyl-1H-pyrazol-3-yl)-amide 1185853-08-0 C17H18N4O2S
    —— (4aR,8S,10aS,10bS)-10-Hydroxy-2,2,4a,8,10b-pentamethyl-2,3,4a,8,9,10,10a,10b-octahydro-benzo[f]chromen-1-one 57016-77-0 C18H26O3
    —— 4',4'-dimethylspiro<5α-cholestane-3,2'-oxazolidine>-3'-oxyl 51231-14-2 C31H54NO2
    —— (4S,5S)-5-amino-4-(4-aminophenyl)-2,2-dimethyl-1,3-dioxane 1184289-72-2 C12H18N2O2
    —— 4Hβ-11,12-dihydro-20-(tert-butyldimethylsilyloxy)-3α,10α-oxido-12-nortaxane-2,13-dione 185013-46-1 C25H42O4Si
    —— 4-<p-Biphenylyloxy>-3-hydroxy-buttersaeureamid 20804-57-3 C16H17NO3
    —— 4-(1H-indol-3-ylmethyl)-6-(trichloromethyl)-1,3,5-triazin-2-amine 169788-36-7 C13H10Cl3N5
    —— (4-phenyl-2-(2-phenylallyl)pent-4-ene-1,1,1-triyl)tricyclohexane 128097-18-7 C32H43NiO4P
    —— 4-methylhexa-3,5-dien-2-one phenylhydrazone 80457-41-6 C13H16N2
    —— 4-Hydroxy-17-oxo-2-methyl-Δ<sup>1,3,5(10)</sup>-oestratrien 96766-56-2 C19H24O2
    —— 4-Imino-2-(4-nitro-phenyl)-5-phenyl-4H-thieno[2,3-d][1,3]oxazine-6-carboxylic acid methyl ester 77364-62-6 C20H13N3O5S
    —— 4,6-bis(bis(trimethylsilyl)methyl)-4,6-dibromo-2,2,8,8-tetramethyl-3,7-bis(trimethylsilyl)-2,8-disila-4,6-distannanonane 60228-64-0 C29H78Br2Si8Sn2
    —— 4-Cyano-5-dicyanomethylen-2-pyrrolidon 91085-48-2 C8H4N4O
    —— 4-[5-(Chloromethyl)-1,2,4-oxadiazol-3-yl]pyrimidine 1343306-94-4 C7H5ClN4O
    —— (4R,10R)-10-(tert-butyldiphenylsilyloxy)undec-1-en-4-ol 1610046-43-9 C27H40O2Si
    —— 4-Phenyl-2-phenylcarbamoyl-1,2-diazabicyclo<2.2.2>octan 3363-45-9 C19H21N3O
    —— 4-Hydroxy-3,4'-dimethyldiphenylmethan 37559-11-8 C15H16O
    —— 4-Benzoyl-acenaphthen 4658-00-8 C19H14O
    —— 4,4'-Bis-(1,4,7-trioxaheptyl)-2,2'-binaphthyliden-1,1'-dion 135664-73-2 C28H28O8
    —— 4-(2-(4-fluorobenzylthio)acetyl)benzoic acid 1224718-64-2 C16H13FO3S
    —— 4,7-dibromo-2-(2-bromo-4-methyl-anilino)-cycloheptatrienone 108474-36-8 C14H10Br3NO
    —— 4-Benzenesulfonylmethyl-3-chloro-7-nitro-1H-indazole 119872-47-8 C14H10ClN3O4S
    —— 4'-(β-diethylaminoethoxy)-2,3-diphenylbutyrophenone 74631-79-1 C28H33NO2
    —— (4S,5S,8R,10R,11S)-N-isobutyl-6-aza-11-<<(tert-butyloxy)carbonyl>amino>-5-(cyclohexylmethyl)-4,10-dihydroxy-7-oxo-12-phenyl-8-(1,2,4-triazol-1-ylmethyl)-1-dodecene-2-carboxamide 123482-67-7 C37H58N6O6
    —— 4-[5-(3-phenylpropanamido)-1,3,4-thiadiazol-2-yl]benzoic acid 1361230-32-1 C18H15N3O3S
    —— 4-(biphenyl-4-yl)oxazolidin-2-one 69776-91-6 C15H13NO2
    —— 4,4-Bis-(1,4-dimethoxy-9,10-dioxo-9,10-dihydro-anthracen-2-yl)-butyric acid methyl ester 69960-36-7 C37H30O10
    —— (4-Chloro-2-methyl-phenoxy)-acetic acid 4-chloromethyl-benzyl ester 17852-39-0 C17H16Cl2O3
    —— 4-Amino-N-{4-methyl-6-[(E)-2-(5-nitro-furan-2-yl)-vinyl]-pyrimidin-2-yl}-benzenesulfonamide 30131-63-6 C17H15N5O5S
    —— (4-{[4-{[6-(cyanomethyl)-1,3-benzothiazol-2-yl]amino}-6-(phenylmethyl)-2-pyrimidinyl]amino}phenyl)acetic acid 1246031-78-6 C28H22N6O2S
    —— 4-bromo-5,6-dichloro-2-isopropylamino-1-(2,3-di-O-acetyl-β-D-erythrofuranosyl)benzimidazole 286942-11-8 C18H20BrCl2N3O5
    —— 4-(3,5-dimethylpyridin-1-ium-1-yl)-3,5-dimethylpyridine;chloride;hydrochloride 71756-64-4 C14H17N2*ClH*Cl
    —— 4-(2-butyl-5-{(S)-1-[(2-mercaptomethyl-4-methylpentanoylamino)methyl]-2-phenylethylcarbamoyl}imidazol-1-ylmethyl)benzoic acid 1073546-99-2 C32H42N4O4S
    —— 4-[5-(4-fluoro-3-methoxybenzyl)furan-2-yl]-2-hydroxy-4-oxo-2-butenoic acid methyl ester 500367-59-9 C17H15FO6
    —— 4,7-bis(6-undecylthieno[3,2-b]thiophen-2-yl)benzothiadiazole 1402854-77-6 C40H52N2S5
    —— 4-Methyl-6-phenyl-cyclohex-3-enecarboxylic acid hydrazide 307551-31-1 C14H18N2O