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中文名称 英文名称 CAS号 化学式 结构式图片
—— 9-[2-(1,1,1,5,5,5-Hexafluoro-3-phosphanylpentan-3-yl)oxyethyl]-6-(4-propoxyphenyl)sulfanylpurin-2-amine —— C21H24F6N5O2PS
9-[2-(1,1,1,5,5,5-Hexafluoro-3-phosphanylpentan-3-yl)oxyethyl]-6-(4-propoxyphenyl)sulfanylpurin-2-amine
—— 9-[[6-[4-[(5-chloropyridin-2-yl)methoxy]-2-oxo-1H-pyridin-3-yl]-7,8-dihydronaphthalen-2-yl]methyl]-1-oxa-4,9-diazaspiro[5.5]undecan-3-one —— C30H31ClN4O4
9-[[6-[4-[(5-chloropyridin-2-yl)methoxy]-2-oxo-1H-pyridin-3-yl]-7,8-dihydronaphthalen-2-yl]methyl]-1-oxa-4,9-diazaspiro[5.5]undecan-3-one
—— 9-[2-(1,1,1,5,5,5-Hexafluoro-3-phosphanylpentan-3-yl)oxyethyl]-6-[4-(2-methylpropoxy)phenyl]sulfanylpurin-2-amine —— C22H26F6N5O2PS
9-[2-(1,1,1,5,5,5-Hexafluoro-3-phosphanylpentan-3-yl)oxyethyl]-6-[4-(2-methylpropoxy)phenyl]sulfanylpurin-2-amine
—— (9R)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-[(4-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C30H30N4O5
(9R)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-[(4-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9S)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-[(4-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C30H30N4O5
(9S)-9-(3,4-dimethoxyphenyl)-5,5-dimethyl-13-[(4-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— 9-methoxy-4-(4-phenylpiperazin-1-yl)-5H-pyrimido[5,4-b]indole —— C21H21N5O
9-methoxy-4-(4-phenylpiperazin-1-yl)-5H-pyrimido[5,4-b]indole
—— 9-(biphenyl-4-yl)-2-ethoxy-7,7-dimethyl-10-thioxo-9,10-dihydro-7H-pyrrolo[3,2,1-ij][1,2]thiazolo[5,4-c]quinoline-4,5-dione —— C28H22N2O3S2
9-(biphenyl-4-yl)-2-ethoxy-7,7-dimethyl-10-thioxo-9,10-dihydro-7H-pyrrolo[3,2,1-ij][1,2]thiazolo[5,4-c]quinoline-4,5-dione
—— 9-(4-morpholin-4-yl-but-2-ynyl)-carbazole 21070-47-3 C20H20N2O
9-(4-morpholin-4-yl-but-2-ynyl)-carbazole
—— 9-[(E)-4-[3-methyl-4-[[5-propan-2-yl-3-[(2S,3R,4S,5R,6R)-3,4,5-triacetyl-3,4,5-trihydroxy-6-(1-hydroxy-2-oxopropyl)oxan-2-yl]oxy-1H-pyrazol-4-yl]methyl]phenyl]but-3-enyl]-3,9-diazaspiro[5.5]undecane-3-carboxylic acid —— C42H58N4O12
9-[(E)-4-[3-methyl-4-[[5-propan-2-yl-3-[(2S,3R,4S,5R,6R)-3,4,5-triacetyl-3,4,5-trihydroxy-6-(1-hydroxy-2-oxopropyl)oxan-2-yl]oxy-1H-pyrazol-4-yl]methyl]phenyl]but-3-enyl]-3,9-diazaspiro[5.5]undecane-3-carboxylic acid
—— (9R)-13-(3,4-dimethoxyphenyl)-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C29H28N4O5
(9R)-13-(3,4-dimethoxyphenyl)-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9S)-13-[(4-methoxyphenyl)methyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C28H26N4O3
(9S)-13-[(4-methoxyphenyl)methyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— 9-methoxy-4-{4-[(2E)-3-phenylprop-2-en-1-yl]piperazin-1-yl}-5H-pyrimido[5,4-b]indole —— C24H25N5O
9-methoxy-4-{4-[(2E)-3-phenylprop-2-en-1-yl]piperazin-1-yl}-5H-pyrimido[5,4-b]indole
—— (9S)-13-(3,4-dimethoxyphenyl)-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C29H28N4O5
(9S)-13-(3,4-dimethoxyphenyl)-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9R)-13-[(4-methoxyphenyl)methyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C28H26N4O3
(9R)-13-[(4-methoxyphenyl)methyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— 9-methoxy-4-[4-[(E)-3-phenylprop-2-enyl]piperazin-4-ium-1-yl]-5H-pyrimido[5,4-b]indole —— C24H26N5O+
9-methoxy-4-[4-[(E)-3-phenylprop-2-enyl]piperazin-4-ium-1-yl]-5H-pyrimido[5,4-b]indole
—— (9S)-13-benzyl-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C27H24N4O2
(9S)-13-benzyl-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9R)-13-benzyl-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C27H24N4O2
(9R)-13-benzyl-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— 9-(3-chloro-4-methylphenyl)-4-ethyl-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one —— C20H18ClNO3
9-(3-chloro-4-methylphenyl)-4-ethyl-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one
—— [9-(2-Ethylhexyl)-6-[hydroxy-(2-methanimidoylphenyl)methyl]carbazol-3-yl]-(2,4,6-trimethylphenyl)methanone —— C38H42N2O2
[9-(2-Ethylhexyl)-6-[hydroxy-(2-methanimidoylphenyl)methyl]carbazol-3-yl]-(2,4,6-trimethylphenyl)methanone
—— [9-[4-[N-hydroxy-C-methylcarbonimidoyl]phenyl]-6-[N-hydroxy-C-phenylcarbonimidoyl]carbazol-3-yl]-(2,4,6-trimethylphenyl)methanone —— C37H31N3O3
[9-[4-[N-hydroxy-C-methylcarbonimidoyl]phenyl]-6-[N-hydroxy-C-phenylcarbonimidoyl]carbazol-3-yl]-(2,4,6-trimethylphenyl)methanone
—— 9-(2,3-dimethylphenyl)-2-methoxy-7,7-dimethyl-10-thioxo-9,10-dihydro-7H-isothiazolo[5,4-c]pyrrolo[3,2,1-ij]quinoline-4,5-dione —— C23H20N2O3S2
9-(2,3-dimethylphenyl)-2-methoxy-7,7-dimethyl-10-thioxo-9,10-dihydro-7H-isothiazolo[5,4-c]pyrrolo[3,2,1-ij]quinoline-4,5-dione
—— [9-Methyl-2-oxo-7,8-bis(prop-2-enoxy)-1,5-dioxonan-3-yl]-[(2-methylpropan-2-yl)oxycarbonyl]carbamic acid —— C20H31NO9
[9-Methyl-2-oxo-7,8-bis(prop-2-enoxy)-1,5-dioxonan-3-yl]-[(2-methylpropan-2-yl)oxycarbonyl]carbamic acid
—— 9-(4-Methoxyphenyl)-1-methyl-3-[(4-methylphenyl)methyl]-6,7,8,10-tetrahydropurino[7,8-a]pyrimidin-5-ium-2,4-dione —— C24H26N5O3+
9-(4-Methoxyphenyl)-1-methyl-3-[(4-methylphenyl)methyl]-6,7,8,10-tetrahydropurino[7,8-a]pyrimidin-5-ium-2,4-dione
—— 9-(4-Ethylphenyl)-1-methyl-3-pentyl-6,7,8,10-tetrahydropurino[7,8-a]pyrimidin-5-ium-2,4-dione —— C22H30N5O2+
9-(4-Ethylphenyl)-1-methyl-3-pentyl-6,7,8,10-tetrahydropurino[7,8-a]pyrimidin-5-ium-2,4-dione
—— 9-(2-methoxyphenyl)-2,3,7,7-tetramethyl-10-thioxo-9,10-dihydro-7H-isothiazolo[5,4-c]pyrrolo[3,2,1-ij]quinoline-4,5-dione —— C23H20N2O3S2
9-(2-methoxyphenyl)-2,3,7,7-tetramethyl-10-thioxo-9,10-dihydro-7H-isothiazolo[5,4-c]pyrrolo[3,2,1-ij]quinoline-4,5-dione
—— (9R,11S)-9-(3-chlorophenyl)-11-(3,4-dimethoxyphenyl)-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2,4,6,14,16-hexaene —— C26H21ClN4O3
(9R,11S)-9-(3-chlorophenyl)-11-(3,4-dimethoxyphenyl)-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2,4,6,14,16-hexaene
—— (9R,11R)-9-(4-bromophenyl)-4-chloro-11-pyridin-3-yl-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2(7),3,5,14,16-hexaene —— C23H15BrClN5O
(9R,11R)-9-(4-bromophenyl)-4-chloro-11-pyridin-3-yl-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2(7),3,5,14,16-hexaene
—— (9R,11R)-9-(3-chlorophenyl)-11-(3,4-dimethoxyphenyl)-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2,4,6,14,16-hexaene —— C26H21ClN4O3
(9R,11R)-9-(3-chlorophenyl)-11-(3,4-dimethoxyphenyl)-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2,4,6,14,16-hexaene
—— (9S,11S)-9-(4-bromophenyl)-4-chloro-11-pyridin-3-yl-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2(7),3,5,14,16-hexaene —— C23H15BrClN5O
(9S,11S)-9-(4-bromophenyl)-4-chloro-11-pyridin-3-yl-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2(7),3,5,14,16-hexaene
—— (9R)-9-(4-methoxyphenyl)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C29H28N4O4
(9R)-9-(4-methoxyphenyl)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9R,11S)-9-(4-bromophenyl)-4-chloro-11-pyridin-3-yl-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2(7),3,5,14,16-hexaene —— C23H15BrClN5O
(9R,11S)-9-(4-bromophenyl)-4-chloro-11-pyridin-3-yl-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2(7),3,5,14,16-hexaene
—— (9S,11R)-9-(4-bromophenyl)-4-chloro-11-pyridin-3-yl-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2(7),3,5,14,16-hexaene —— C23H15BrClN5O
(9S,11R)-9-(4-bromophenyl)-4-chloro-11-pyridin-3-yl-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2(7),3,5,14,16-hexaene
—— (9S,11S)-9-(3-chlorophenyl)-11-(3,4-dimethoxyphenyl)-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2,4,6,14,16-hexaene —— C26H21ClN4O3
(9S,11S)-9-(3-chlorophenyl)-11-(3,4-dimethoxyphenyl)-8-oxa-12,13,15,17-tetrazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2,4,6,14,16-hexaene
—— 9-(methylsulfanyl)-4-(propan-2-yl)-7-(pyrrolidin-1-yl)-2,3-dihydro-1H-cyclopenta[4′,5′]pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidine —— C20H24N4S2
9-(methylsulfanyl)-4-(propan-2-yl)-7-(pyrrolidin-1-yl)-2,3-dihydro-1H-cyclopenta[4′,5′]pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidine
—— (9S)-9-(4-methoxyphenyl)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C29H28N4O4
(9S)-9-(4-methoxyphenyl)-5,5-dimethyl-13-[(2-methylphenoxy)methyl]-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— 9-(4-Methoxyphenyl)-1-methyl-3-(3-methylbutyl)-6,7,8,10-tetrahydropurino[7,8-a]pyrimidin-5-ium-2,4-dione —— C21H28N5O3+
9-(4-Methoxyphenyl)-1-methyl-3-(3-methylbutyl)-6,7,8,10-tetrahydropurino[7,8-a]pyrimidin-5-ium-2,4-dione
—— (9S)-5,5-dimethyl-9,13-diphenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C26H22N4O2
(9S)-5,5-dimethyl-9,13-diphenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9S)-5,5-dimethyl-13-[(5-methyl-2-propan-2-ylphenoxy)methyl]-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C31H32N4O3
(9S)-5,5-dimethyl-13-[(5-methyl-2-propan-2-ylphenoxy)methyl]-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9S)-13-[[(4-methoxyphenyl)methylideneamino]oxymethyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C29H27N5O4
(9S)-13-[[(4-methoxyphenyl)methylideneamino]oxymethyl]-5,5-dimethyl-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9R)-9-(4-methoxyphenyl)-5,5-dimethyl-13-thiophen-2-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C25H22N4O3S
(9R)-9-(4-methoxyphenyl)-5,5-dimethyl-13-thiophen-2-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9R)-5,5-dimethyl-9,13-diphenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C26H22N4O2
(9R)-5,5-dimethyl-9,13-diphenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9S)-5,5-dimethyl-9-phenyl-13-thiophen-2-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C24H20N4O2S
(9S)-5,5-dimethyl-9-phenyl-13-thiophen-2-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— 9-(methylsulfanyl)-N-[3-(morpholin-4-yl)propyl]-4-(propan-2-yl)-2,3-dihydro-1H-cyclopenta[4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-7-amine —— C23H31N5OS2
9-(methylsulfanyl)-N-[3-(morpholin-4-yl)propyl]-4-(propan-2-yl)-2,3-dihydro-1H-cyclopenta[4',5']pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-7-amine
—— 9-[2-(6,6-Dimethylcyclohexa-1,3-dien-1-yl)phenyl]carbazole —— C26H23N
9-[2-(6,6-Dimethylcyclohexa-1,3-dien-1-yl)phenyl]carbazole
—— (9S)-5,5-dimethyl-13-(3-methylphenyl)-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C27H24N4O2
(9S)-5,5-dimethyl-13-(3-methylphenyl)-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9R)-5,5-dimethyl-13-[(5-methyl-2-propan-2-ylphenoxy)methyl]-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C31H32N4O3
(9R)-5,5-dimethyl-13-[(5-methyl-2-propan-2-ylphenoxy)methyl]-9-phenyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— (9R)-5,5-dimethyl-9-phenyl-13-thiophen-2-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C24H20N4O2S
(9R)-5,5-dimethyl-9-phenyl-13-thiophen-2-yl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— 9-(4-chlorophenyl)-2-ethoxy-7,7-dimethyl-10-thioxo-9,10-dihydro-7H-pyrrolo[3,2,1-ij][1,2]thiazolo[5,4-c]quinoline-4,5-dione —— C22H17ClN2O3S2
9-(4-chlorophenyl)-2-ethoxy-7,7-dimethyl-10-thioxo-9,10-dihydro-7H-pyrrolo[3,2,1-ij][1,2]thiazolo[5,4-c]quinoline-4,5-dione
—— (9R)-13-benzyl-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one —— C28H26N4O3
(9R)-13-benzyl-9-(4-methoxyphenyl)-5,5-dimethyl-2-oxa-12,14,15,17-tetrazatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),11,13,16-pentaen-7-one
—— 9-methoxy-4-(4-pyridin-1-ium-2-ylpiperazin-1-yl)-5H-pyrimido[5,4-b]indole —— C20H21N6O+
9-methoxy-4-(4-pyridin-1-ium-2-ylpiperazin-1-yl)-5H-pyrimido[5,4-b]indole