• 4(1H)-Pyridinone,2-ethyl-3-hydroxy-1-(2-methoxyethyl)-
• 126055-14-9
• C10H15 N O3
• 197.231
• .

• 4H-1-Benzopyran-4-one,3-(phenylmethyl)-
• 30779-85-2
• C16H12 O2
• 236.2653
• .

• 4H-1-Benzopyran-4-one,3-[[6-deoxy-2-O-(6-deoxy-a-L-mannopyranosyl)-a-L-mannopyranosyl]oxy]-5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-
• 121064-69-5
• C28H32 O15
• .

• 4-Pyridinecarboxamide,N-methyl-N-[2-[1-(phenylmethyl)-4-piperidinyl]ethyl]-, hydrochloride (1:2)
• 113045-25-3
• C21H27 N3 O . 2 Cl H
• 410.3805
• .

• 4,7-Ethanoisobenzofuran-1,3-dione,hexahydro-
• 26843-47-0
• C10H12 O3
• 180.2
• .

• 4-Thiazoleacetic acid,2-[(2-chloroacetyl)amino]-a-(methoxyimino)-
• 60846-17-5
• C8H8 Cl N3 O4 S
• 262-471-0
• 277.68482
• .

• 4H-Furo[3,2-b]indole-2-carboxamide,4-methyl-N-[3-(1-piperidinyl)propyl]-6-(trifluoromethyl)-
• 73356-67-9
• C21H24 F3 N3 O2
• 0
• .

• 4H-1-Benzopyran-4-one,3-[(6-O-b-D-glucopyranosyl-b-D-glucopyranosyl)oxy]-5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-
• 17429-69-5
• C28H32 O17
• 640.54
• .

• 4H-1-Benzopyran-4-one,8-[5-(5,7-dihydroxy-4-oxo-4H-1-benzopyran-3-yl)-2,3-dihydroxyphenyl]-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-
• 111200-23-8
• C30H18 O12
• .

• 4H-Furo[2,3-b]pyran-4-one,2,3-dihydro-6-(4-hydroxyphenyl)-2,3,3-trimethyl-, (-)-
• 158991-19-6
• C16H16 O4
• 0
• .

• 4H-Dibenzo[de,g]quinolin-1-ol,5,6,6a,7-tetrahydro-2,10,11-trimethoxy-, (6aS)-
• 26931-78-2
• C19H21 N O4
• 327.3743
• .

• 4H-1-Benzopyran-4-one,2,3-dihydro-5,7,8-trihydroxy-2-(4-hydroxyphenyl)-, (2S)-
• 2569-76-8
• C15H12 O6
• .

• 4H-Pyran-4-one,2,6-diphenyl-
• 1029-94-3
• C17H12 O2
• 248.27598
• .

• 4-Benzofuranol,7-methoxy-5-phenyl-
• 123332-44-5
• C15H12 O3
• 240.254
• .

• 4H-1,3-Thiazino[5,6-b]quinoxalin-4-one,2-[(2,4-dimethylphenyl)amino]-
• 154371-23-0
• C18H14 N4 O S
• 334.395
• .

• 4,12,23,27,42-Hexatetracontapentaene-1,18,21,45-tetrayne-3,6,20,44-tetrol,(3S,4E,12Z,20S,23E,27Z,42E,44S)-
• 128646-05-9
• C46H68 O4
• .

• 4-Quinolinamine,2,8-dimethyl-N-[4-[4-(2-methylphenyl)-1-piperazinyl]phenyl]-
• 87602-50-4
• C28H30 N4
• 0
• .

• 4H-Imidazo[1,5-a][1,4]benzodiazepine-3-carboxylicacid, 8-chloro-6-(2-fluorophenyl)-1-methyl-
• 59468-44-9
• C19H13 Cl F N3 O2
• 261-777-1
• 369.7768232
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 6-bromo-3,3-dimethyl-7-oxo-, sodium salt, [2S-(2a,5a,6b)]- (9CI)
• 73335-78-1
• C8H10 Br N O3 S . Na
• 277-389-0
• 302.12073
• .

• 4-Pyrimidinamine,2-(butylthio)-6-(phenylthio)-
• 284681-95-4
• C14H17 N3 S2
• 291.4349
• .

• 4-Acridinamine,5,6,7,8-tetrahydro-
• 3198-41-2
• C13H14 N2
• 348.48
• .

• 4,7-Etheno-1H-cyclobut[f]isoindole-1,3(2H)-dione,3a,4,4a,6a,7,7a-hexahydro-2-[4-[4-(2-pyrimidinyl)-1-piperazinyl]butyl]-,monohydrochloride, (3aR,4R,4aR,6aS,7S,7aS)-rel- (9CI)
• 114374-97-9
• C24H29 N5 O2 . Cl H
• 419.5194
• .

• 4H-1-Benzopyran-4-one,2-(3,4-dimethoxyphenyl)-5,6,7-trimethoxy-
• 2306-27-6
• C₂₀H₂₀O₇
• 372.3686
• .

• 4H-[1,2,4]Triazolo[4,3-a][1,4]benzodiazepine,8-chloro-6-(3,4-dimethoxyphenyl)-1-[(methylthio)methyl]-
• 115765-00-9
• C20H19 Cl N4 O2 S
• 414.9085
• .

• 4-Pyridinecarboxamide,2-propyl-
• 80944-48-5
• C9H12 N2 O
• 279-634-7
• 164.20438
• .

• 4-Piperidinol,1-(cyclopropylmethyl)-4-phenyl-
• 102071-52-3
• C15H21 N O
• 231.3333
• .

• 4-Hexenoic acid,6-[(1S,2R,3R,4R)-3-[[[[(4-chlorophenyl)amino]carbonyl]hydrazono]methyl]-7-oxabicyclo[2.2.1]hept-2-yl]-,(4Z)- (9CI)
• 142116-37-8
• C20H24 Cl N3 O4
• 405.8753
• .

• 4-Piperidinol,5-[(dipropylamino)methyl]-1,2,5-trimethyl-4-phenyl-, 4-acetate, hydrochloride(1:2)
• 28866-22-0
• C23H38 N2 O2 . 2 Cl H
• 0
• .

• 4H-Pyrazino[3,2,1-jk]carbazole,5,6-dihydro-8-methyl-, hydrochloride (1:1)
• 15932-34-0
• C15H14 N2 . Cl H
• 258.746
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 3,3-dimethyl-7-oxo-6-[(1-oxo-3-octenyl)amino]-, [2S-[2a,5a,6b(E)]]- (9CI)
• 137593-45-4
• C16H24 N2 O4 S
• 0
• .

• 4(3H)-Quinazolinone,6,8-dibromo-3-(2-methoxyphenyl)-2-[[(1-methylpropyl)sulfonyl]methyl]-
• 108674-21-1
• C20H20 Br2 N2 O4 S
• 544.2568
• .

• 4-Morpholinepentanoicacid, g-(benzoylamino)-d-oxo-
• 6460-75-9
• C16H20 N2 O5
• 320.3404
• .

• 4-Pyridinecarboxylicacid, 2-[3-[[(2,4-dichlorophenyl)methyl]amino]-3-oxopropyl]hydrazide
• 13012-70-9
• C16H16 Cl2 N4 O2
• 367.2298
• .

• 4H-Anthra[1,2-b]pyran-4,7,12-trione,11-hydroxy-5-methyl-8-[2,3,6-trideoxy-3-(dimethylamino)-b-D-arabino-hexopyranosyl]-10-[2,3,6-trideoxy-3-(dimethylamino)-5-C-hydroxy-3-C-methylhexopyranosyl]-2-(3,3',3'-trimethyl[2,2'-bioxiran]-3-yl)-(9CI)
• 116988-30-8
• C42H52 N2 O12
• 0
• .

• 4-Acridinecarboxamide,N-[4-(aminosulfonyl)phenyl]-
• 165121-46-0
• C20H15 N3 O3 S
• 377.4164
• .

• 4-Pyrimidinamine,2-methoxy-6-[(3,4,5-trimethoxyphenyl)methyl]-
• 143467-57-6
• C15H19 N3 O4
• 305.3291
• .

• 4(3H)-Pyrimidinone,2-[[1-(1H-benzimidazol-2-yl)-4-piperidinyl]methylamino]-
• 108612-57-3
• C17H20 N6 O
• 0
• .

• 4-[4-(4,5-dihydro-1H-imidazol-2-yl)phenyl]-2-phenyl-pyrimidine
• 160522-98-5
• C₁₉H₁₆N₄
• 0
• .

• 4-Acridinecarboxamide,9-[[2-methoxy-4-[(methylsulfonyl)amino]phenyl]amino]-N,5-dimethyl-
• 80841-47-0
• C24H24 N4 O4 S
• 0
• .

• 4H-1,3-Benzoxazin-4-one,2,3-dihydro-2-thioxo-
• 10021-35-9
• C8H5 N O2 S
• 179.20
• .

• 4H-Imidazol-4-one,3,5-dihydro-5-(1H-indol-3-ylmethylene)-3-[4-(4-methylphenoxy)phenyl]-2-phenyl-
• 127662-62-8
• C31H23 N3 O2
• 469.5332
• .

• 4(1H)-Pyrimidinone,2,6-diamino-5-(b-D-glucopyranosyloxy)-
• 152-93-2
• C10H16 N4 O7
• 205-809-4
• 304.25664
• .

• 4-Thiazolidinone,5-[(5-chloro-2-hydroxyphenyl)methylene]-2-thioxo-
• 6320-49-6
• C10H6 Cl N O2 S2
• 271.74
• .

• 4-chloro-8-(dichloromethyl)-10,10-dioxo-10$l^{6}-thia-7,9-diazabicyclo[4.4.0]deca-1,3,5-triene-3-sulfonamide; 3,5-diamino-6-chloro-N-(diaminomethylidene)pyrazine-2-carboxamide
• 138258-83-0
• C₁₄H₁₆Cl₄N₁₀O₅S₂
• 0
• .

• 4H-1,3-Oxazine,5,6-dihydro-4,4,6-trimethyl-2-[2-(1-naphthalenyl)ethenyl]-, hydrochloride, (E)-(9CI)
• 100098-83-7
• C19H21 N O . Cl H
• 0
• .

• 4-Piperidinol,4-phenyl-1-[2-(phenylamino)ethyl]-, 4-propanoate, hydrochloride (1:2)
• 10434-53-4
• C22H28 N2 O2 . 2 Cl H
• 352.4699
• .

• 4-Thiazolidinone,5-butyl-3-(4-chlorophenyl)-2-thioxo-
• 23522-59-0
• C13H14 Cl N O S2
• 299.8394
• .

• 4H-1-Benzopyran-4-one,6-[6-(5,7-dihydroxy-4-oxo-4H-1-benzopyran-2-yl)-2,3-dihydroxyphenyl]-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-
• 116383-34-7
• C30H18 O12
• 0
• .

• 4H-1-Benzopyran-4-one,7-[[2-O-(6-O-acetyl-b-D-glucopyranosyl)-b-D-glucopyranosyl]oxy]-2-(3,4-dihydroxyphenyl)-5-hydroxy-
• 135546-08-6
• C29H32 O17
• 0
• .

• 4H-1-Benzopyran-4-one,2-(3,4-dimethoxyphenyl)-7-methoxy-
• 22395-24-0
• C18H16 O5
• 312.32
• .