• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 3,3-dimethyl-7-oxo-6-[(4-pyridinylacetyl)amino]-, monopotassium salt,[2S-(2a,5a,6b)]- (9CI)
• 14676-17-6
• C15H17 N3 O4 S . K
• 373.4685
• .

• 4H-1-Benzopyran-4-one,5,7-dihydroxy-2-(4-hydroxyphenyl)-8-(6-O-D-xylopyranosyl-b-D-glucopyranosyl)-
• 11054-09-4
• C26H28 O14
• .

• 4-Hydroxypipecolic acid
• 14228-16-1
• C₆H₁₁NO₃
• 0
• .

• 4-Pyridinecarboxylicacid, 2-[2-methyl-5-(1-methylethenyl)-2-cyclohexen-1-ylidene]hydrazide
• 15407-84-8
• C16H19 N3 O
• 269.3416
• .

• 4H-1-Benzopyran-4-one,3-[4,6-dihydroxy-3-methoxy-2-(3-methyl-2-buten-1-yl)phenyl]-7-hydroxy-
• 111922-23-7
• C21H20 O6
• .

• 4(3H)-Quinazolinone,3-acetyl-
• 16347-77-6
• C10H8 N2 O2
• 188.1827
• .

• 4-Pyridinecarboxylicacid, 2-cycloheptylidenehydrazide
• 15885-62-8
• C13H17 N3 O
• 231.2936
• .

• 4,6(1H,5H)-Pyrimidinedione,5-ethyldihydro-5-(2-methyl-2-propen-1-yl)-2-thioxo-
• 115-56-0
• C10H14 N2 O2 S
• 204-095-1
• 226.29536
• .

• 4,8-Epoxyazulen-5-ol,decahydro-5,8a-dimethyl-3-(1-methylethyl)-, (3R,3aR,4S,5S,8S,8aS)-rel-(-)-
• 142569-89-9
• C15H26 O2
• .

• 4(3H)-Pyrimidinone,5-fluoro-2-phenyl-
• 143328-90-9
• C10H7 F N2 O
• 190.1738
• .

• 4H-1-Benzopyran-2-carboxylicacid, 4-oxo-, ethyl ester
• 14736-31-3
• C12H10 O4
• 238-797-4
• 218.2054
• .

• 4H-1-Benzopyran-4-one,8-(2,6-dideoxy-b-D-ribo-hexopyranosyl)-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-
• 134044-97-6
• C22H22 O8
• 0
• .

• 4-Quinazolinamine,6,7-dimethoxy-2-[4-(2-quinazolinyl)-1-piperazinyl]-
• 104965-47-1
• C22H23 N7 O2
• 417.4637
• .

• 4-Acridinecarboxamide,N-[2-(dimethylamino)ethyl]-6-methyl-
• 106626-75-9
• C19H21 N3 O
• 307.3895
• .

• 4,7-Methanobenzo[b]thiophene,3-chloro-2,2,3-trifluorooctahydro-
• 102489-67-8
• C9H10 Cl F3 S
• .

• 4(1H)-Pyridinone,2-ethyl-3-hydroxy-1-(2-propen-1-yl)-
• 126071-07-6
• C10H13 N O2
• 179.2157
• .

• 4H-1-Benzopyran-4-one,3-[5-(5,7-dihydroxy-4-oxo-4H-1-benzopyran-2-yl)-2-hydroxyphenyl]-2,3-dihydro-5,7-dihydroxy-2-(4-hydroxyphenyl)-,(2R,3S)-
• 159194-98-6
• C30H20 O10
• .

• 4H-Pyrano[3,2-b]pyridin-4-one,2-(4-pyridinyl)-
• 148190-30-1
• C13H8 N2 O2
• 224.2148
• .

• 4H-Pyrido[2,3-b][1,4]diazepin-4-one,3,5-dihydro-2-methyl-5-[3-(4-methyl-1-piperazinyl)propyl]-, hydrochloride (1:1)
• 113524-26-8
• C17H25 N5 O . Cl H
• 351.8742
• .

• 4(3H)-Pyrimidinone,2-[methyl[1-[1-[[4-(trifluoromethyl)phenyl]methyl]-1H-benzimidazol-2-yl]-4-piperidinyl]amino]-
• 108612-66-4
• C25H25 F3 N6 O
• 482.5008
• .

• 4H-Thiopyran-4-one,tetrahydro-2,6-diphenyl-, 1,1-dioxide
• 103225-43-0
• C17H16 O3 S
• 0
• .

• 4-Thiazolepropanamide,N-[(1S,2R,3S)-1-(cyclohexylmethyl)-2,3-dihydroxy-5-methylhexyl]-a-[[(2S)-2-[[(4-methyl-1-piperazinyl)sulfonyl]methyl]-1-oxo-3-phenylpropyl]amino]-,monohydrochloride, (aS)- (9CI)
• 138810-64-7
• C35H55 N5 O6 S2 . Cl H
• 705.9711
• .

• 4H-1-Benzopyran-2-carboxylicacid, 3-(4-chlorophenyl)-5,7-dihydroxy-4-oxo-, ethyl ester
• 13004-40-5
• C18H13 Cl O6
• 360.7452
• .

• 4(3H)-Pyrimidinone,2-[[1-[1-[[4-fluoro-3-(trifluoromethyl)phenyl]methyl]-1H-benzimidazol-2-yl]-4-piperidinyl]methylamino]-
• 108612-70-0
• C25H24 F4 N6 O
• 500.4913
• .

• 4H-1-Benzopyran-4-one,3-[2,3-dihydro-4-hydroxy-2-(1-methylethenyl)-7-benzofuranyl]-5,7-dihydroxy-(9CI)
• 109517-69-3
• C20H16 O6
• 352.3374
• .

• 4H-1-Benzopyran-4-one,2,3-dihydro-5,7-dihydroxy-2-[3-hydroxy-4-methoxy-5-(3-methyl-2-buten-1-yl)phenyl]-,(2S)-
• 114340-00-0
• C21H22 O6
• 0
• .

• 4(3H)-Pyrimidinone,2-[[1-[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]-4-piperidinyl]propylamino]-
• 108612-63-1
• C26H29 F N6 O
• 460.5465
• .

• 4-Imidazolidinone,3-(2-methylbenzoyl)-5-[(2-methylphenyl)methylene]-2-thioxo-
• 112806-21-0
• C19H16 N2 O2 S
• 336.4075
• .

• 4H-1-Benzopyran-2-carboxylicacid, 4-oxo-, methyl ester
• 18398-73-7
• C11H8 O4
• 204.18
• .

• 4H-Dibenzo[de,g]quinoline-10,11-diol,5,6,6a,7-tetrahydro-6-(2-propen-1-yl)-, (6aR)-
• 18426-17-0
• C19H19 N O2
• 374.27
• .

• 4H-Pyrimido[6,1-a]isoquinolin-4-one,6-ethyl-6,7-dihydro-9,10-dimethoxy-2-[(2,4,6-trimethylphenyl)amino]-,hydrochloride (1:1)
• 108508-87-8
• C25H29 N3 O3 . Cl H
• 455.977
• .

• 4H-Imidazol-4-one,5-[(2-chlorophenyl)methylene]-3,5-dihydro-3-[[(2-nitrophenyl)methylene]amino]-2-phenyl-
• 126293-32-1
• C23H15 Cl N4 O3
• 430.8432
• .

• 4-Octyne-1,8-diol,2,7-bis(hydroxymethyl)-2,7-dimethyl-
• 16343-97-8
• C12H22 O4
• 230.3007
• .

• 4H-1-Benzopyran-2-carboxylicacid, 5,7-dihydroxy-3-(4-methoxyphenyl)-4-oxo-, ethyl ester
• 15485-76-4
• C19H16 O7
• 239-511-0
• 356.33
• .

• 4-Piperidinol,4-(4-chlorophenyl)-1-[(2-phenylcyclopropyl)methyl]-, hydrochloride, trans-(9CI)
• 102071-50-1
• C21H24 Cl N O . Cl H
• 378.3353
• .

• 4-Phenanthridinecarboxamide,N-[2-(dimethylamino)ethyl]-
• 131862-15-2
• C18H19 N3 O
• 293.363
• .

• 4,6-Pteridinedione,2-amino-3,5,7,8-tetrahydro-
• 1131-35-7
• C6H7 N5 O2
• 0
• .

• 4H-Pyran-4-one,5-(1-hydroxyethyl)-2-(hydroxymethyl)-
• 131123-57-4
• C8H10 O4
• 0
• .

• 4H-1-Benzopyran-4-one,6-chloro-2-(1-methyl-1H-1,2,3-triazol-4-yl)-
• 119584-91-7
• C12H8 Cl N3 O2
• 261.6638
• .

• 4H-1-Benzopyran-4-one,5-hydroxy-7-methoxy-2-methyl-6-[(3-methyl-2-buten-1-yl)oxy]-
• 111316-36-0
• C16H18 O5
• .

• 4-Cyclopentene-1,3-dione,2-ethyl-4-(hydroxymethyl)-2-methyl-5-[(1R)-1-methylpropyl]-, (2R)-rel-(-)-
• 141363-67-9
• C13H20 O3
• .

• 4,16-Dioxatricyclo[11.2.1.13,6]heptadec-6(17)-ene-5,11,14-trione,1-methyl-9-(1-methylethenyl)-, (1R,3S,9R,13S)-rel-(-)-
• 100015-16-5
• C19H24 O5
• .

• 4H-1,3-Benzothiazin-4-one,2,3-dihydro-2-imino-3-(1-methylethyl)-
• 15568-03-3
• C11H12 N2 O S
• 220.2908
• .

• 4H-1-Benzopyran-4-one,8-[5-(5,7-dihydroxy-4-oxo-4H-1-benzopyran-2-yl)-2,3-dihydroxyphenyl]-2-[3-[2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4-oxo-4H-1-benzopyran-6-yl]-4,5-dihydroxyphenyl]-5,7-dihydroxy-
• 169238-35-1
• C45H26 O18
• .

• 4H-Imidazol-4-one,3-[[(2-bromophenyl)methylene]amino]-5-[(4-chlorophenyl)methylene]-3,5-dihydro-2-phenyl-
• 126245-09-8
• C23H15 Br Cl N3 O
• 464.7417
• .

• 4H-1,3-Benzoxazin-4-one,2,3-dihydro-2-[4-(trifluoromethyl)phenyl]-
• 103952-75-6
• C15H10 F3 N O2
• 367.55076
• .

• 4-Pyridinecarboxylicacid, 2-(4-methylcyclohexyl)hydrazide
• 15407-89-3
• C13H19 N3 O
• 233.3095
• .

• 4H-1-Benzopyran-4-one,3-[4-amino-3-hydroxy-5-methoxy-2-(3-methyl-2-buten-1-yl)phenyl]-5,7-dihydroxy-8-(3-methyl-2-buten-1-yl)-
• 151590-42-0
• C26H29 N O6
• .

• 4H-Pyrido[1,2-a]pyrimidine-3-carboxamide,6-methyl-4-oxo-N-propyl-, hydrochloride (1:1)
• 125055-77-8
• C13H15 N3 O2 . Cl H
• 281.738
• .

• 4H-Pyrimido[6,1-a]isoquinolin-4-one,2,3,6,7-tetrahydro-8,9-dimethoxy-3,6-dimethyl-2-[(2,4,6-trimethylphenyl)imino]-,monohydrochloride, (S)- (9CI)
• 108446-00-0
• C25H29 N3 O3 . Cl H
• 455.977
• .