• 4-Pyridinecarboxylicacid, 2-(2-hydroxyethyl)hydrazide
• 1078-39-3
• C8H11 N3 O2
• 181.1918
• .

• 4H-1-Benzopyran-4-one,5,7-dihydroxy-3-[4-hydroxy-3-(3-methyl-2-buten-1-yl)phenyl]-8-(3-methyl-2-buten-1-yl)-
• 162616-70-8
• C25H26 O5
• .

• 4(5H)-Thiazolone,2-[(5-methyl-2-phenyl-1H-indol-3-yl)amino]-
• 126193-48-4
• C18H15 N3 O S
• 321.3962
• .

• 4H-1,2,4-Triazole,3-(4-chlorophenyl)-5-[(4-methylphenoxy)methyl]-4-(4-methylphenyl)-
• 141079-01-8
• C23H20 Cl N3 O
• 389.8774
• .

• 4H-1,3-Benzoxazin-4-one,2-(3,4-dimethoxyphenyl)-2,3-dihydro-3-(3,4,5-trimethoxybenzoyl)-
• 103952-78-9
• C26H25 N O8
• 479.4786
• .

• 4-Morpholineethanamine,N-[6-(2-fluorophenyl)-4-methyl-3-pyridazinyl]-, hydrochloride (1:2)
• 118269-89-9
• C17H21 F N4 O . 2 Cl H
• 389.2951
• .

• 4-Pyridazinamine,3,6-dimethyl-
• 1073-36-5
• C6H9 N3
• 0
• .

• 4H-1-Benzopyran-4-one,2-(3,5-dimethoxyphenyl)-7-(b-D-glucopyranosyloxy)-3,5-dihydroxy-
• 123914-42-1
• C23H24 O12
• .

• 4aH-7a,15-endo-Oxiranonaphtho[2',3':4,5]cyclohepta[1,2-b]xanthene-4a-carboxylicacid,6-chloro-2,3,4,7,8,13,15,17-octahydro-1,4,9,12,14,16-hexahydroxy-18-(hydroxymethyl)-8,13,17-trioxo-,methyl ester, (4R,4aR,7aR,15R,18S,20S)- (9CI)
• 160169-60-8
• C31H23 Cl O14
• .

• 4(3H)-Quinazolinone,3-(2-ethylphenyl)-
• 16899-53-9
• C16H14 N2 O
• 250.2952
• .

• 4-Piperidinol,5-amino-2-(1E,3E,8E,10E)-1,3,8,10-pentadecatetraenyl-, (2S,4S,5R)- (9CI)
• 169626-36-2
• C20H34 N2 O
• .

• 4H-Pyrimido[6,1-a]isoquinolin-4-one,2-[(2,4-dimethylphenyl)imino]-2,3,6,7-tetrahydro-9,10-dimethoxy-3,7-dimethyl-,hydrochloride (1:1)
• 108445-74-5
• C24H27 N3 O3 . Cl H
• 441.9504
• .

• 4H-Furo[3,2-c][1]benzopyran-4-one,2-[(1E,3E)-4,8-dimethyl-1,3,7-nonatrienyl]-2,3-dihydro-2,3,9-trimethyl-,(2R,3R)- (9CI)
• 118627-71-7
• C25H30 O3
• .

• 4H-1,3,5-Dithiazine,dihydro-4,6-dimethyl-2-(1-methylethyl)-
• 104691-40-9
• C8H17 N S2
• 191.3573
• .

• 4-Heptanone,1,1,1,7,7,7-hexafluoro-2,6-dihydroxy-2,6-bis(trifluoromethyl)-,[4,4,4-trifluoro-3-hydroxy-1-[3,3,3-trifluoro-2-hydroxy-2-(trifluoromethyl)propyl]-3-(trifluoromethyl)butylidene]hydrazone(9CI)
• 101913-85-3
• C18H12 F24 N2 O4
• 776.2606
• .

• 4-Pyrimidinecarboxaldehyde,1,2,3,6-tetrahydro-2,6-dioxo-, 4-(2-formylhydrazone)
• 14161-02-5
• C6H6 N4 O3
• 182.1368
• .

• 4-Pyridinecarboxaldehyde,3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]-, ion(2-)
• 124051-94-1
• C8H8 N O6 P
• 245.1271
• .

• 4-Acridinecarboxamide,N-[2-(dimethylamino)ethyl]-7-methyl-
• 106626-78-2
• C19H21 N3 O
• 307.3895
• .

• 4H-Anthra[1,2-b]pyran-4,7,12-trione,11-hydroxy-5-methyl-2-[(1E,3Z)-1-methyl-1,3-pentadien-1-yl]-
• 110954-31-9
• C24H18 O5
• .

• 4H-Cyclopenta[10,11]chryseno[3,4-b]oxirene-6,7-diol,6,7,7a,8a-tetrahydro-, (6R,7S,7aS,8aR)-rel-
• 169383-22-6
• C19H14 O3
• .

• 4H-1-Benzopyran-4-one,3,5-dihydroxy-7-methoxy-2-(4-methoxyphenyl)-
• 15486-33-6
• C17H14 O6
• 239-513-1
• 314.29
• .

• 4H-1-Benzopyran-4-one,7-hydroxy-3-(8-hydroxy-7-methoxy-2,2-dimethyl-2H-1-benzopyran-5-yl)-
• 152246-49-6
• C21H18 O6
• .

• 4H-Dibenzo[de,g]quinolin-9-ol,5,6,6a,7-tetrahydro-1,2,10-trimethoxy-6-(phenylmethyl)-, hydrochloride, (S)-(9CI)
• 101832-28-4
• C26H27 N O4 . Cl H
• 453.9578
• .

• 4-Quinolinol,4-ethynyldecahydro-1,2-dimethyl-, (2R,4S,4aR,8aR)-rel-
• 16067-45-1
• C13H21 N O
• 207.3119
• .

• 4-Piperidinecarboxylicacid, 1-(2-oxopropyl)-4-phenyl-, ethyl ester
• 102395-61-9
• C17H23 N O3
• 289.3694
• .

• 4H-Imidazo[4,5-c][1,8]naphthyridin-4-one,3,5-dihydro-3-(1-methylethyl)-5-phenyl-
• 139339-10-9
• C18H16 N4 O
• 0
• .

• 4H-1-Benzopyran-4-one,2-(3,4-dimethoxyphenyl)-6-[3-(3,4-dimethoxyphenyl)-1-oxo-2-propen-1-yl]-
• 154185-53-2
• C28H24 O7
• 472.486
• .

• 4H-1-Benzopyran-4-one,7-[(O-6-O-acetyl-b-D-glucopyranosyl-(1®2)-O-[6-deoxy-b-D-mannopyranosyl-(1®4)]-O-[b-D-glucopyranosyl-(1®6)]-b-D-glucopyranosyl)oxy]-5-hydroxy-2-(4-methoxyphenyl)-(9CI)
• 109517-74-0
• C42H54 O25
• 958.8632
• .

• 4-Acridinecarboxamide,N-[2-(dimethylamino)ethyl]-9,10-dihydro-9-oxo-, hydrochloride (1:1)
• 112022-21-6
• C18H19 N3 O2 . Cl H
• 345.8233
• .

• 4H-1-Benzopyran-4-one,2-(4-fluorophenyl)-
• 1645-21-2
• C15H9 F O2
• 240.2292
• .

• 4(3H)-Quinazolinone,6,8-dibromo-3-(2-chlorophenyl)-2-[[(1-methylpropyl)sulfonyl]methyl]-
• 108674-22-2
• C19H17 Br2 Cl N2 O3 S
• 548.6759
• .

• 4-Quinolinecarboxylicacid, 2-cyclopropyl-
• 119778-64-2
• C₁₃H₁₁NO₂
• 213.24
• .

• 4H-1-Benzopyran-4-one,2,3-dihydro-2,7-dihydroxy-5-[(6-hydroxy-4-oxo-4H-pyran-2-yl)methyl]-2-methyl-(9CI)
• 155645-48-0
• C16H14 O7
• .

• 4H-Imidazol-4-one,3,5-dihydro-2-methyl-5-[(2-phenyl-1H-indol-3-yl)methylene]-3-(5-propyl-1,3,4-thiadiazol-2-yl)-
• 143658-89-3
• C24H21 N5 O S
• 427.5214
• .

• 4,25,43,44-Tetraoxatricyclo[37.3.1.118,22]tetratetraconta-8,10,29,31-tetraene-3,16,24,37-tetrone,1,2,14,22,23,35-hexahydroxy-5,17,21,26,38,42-hexamethyl- (9CI)
• 156407-55-5
• C46H72 O14
• .

• 4H-Imidazo[4,5-c]quinolin-4-one,1,5-dihydro-5-(2-methoxyethyl)-1-methyl-
• 133306-24-8
• C14H15 N3 O2
• 0
• .

• 4-Hexenoic acid,4-formyl-3-(2-oxoethyl)-, 2-(3,4-dihydroxyphenyl)ethyl ester, (3S,4E)-
• 149183-75-5
• C17H20 O6
• 320.339
• .

• 4H-1-Benzopyran-4-one,3,5,7-trihydroxy-2-[4-hydroxy-3-(3-methyl-2-buten-1-yl)phenyl]-6-(3-methyl-2-buten-1-yl)-
• 142474-52-0
• C25H26 O6
• 422.4703
• .

• 4-Thiazolidinone,5-[(4-chlorophenyl)methylene]-3-[[[4-[(4-phenyl-1-piperazinyl)carbonyl]phenyl]amino]methyl]-2-thioxo-
• 104183-57-5
• C28H25 Cl N4 O2 S2
• .

• 4H-Imidazo[1,5-a][1,4]benzodiazepine-3-carboxylicacid, 8-fluoro-5,6-dihydro-5-methyl-6-oxo-,3-[(7-nitro-2,1,3-benzoxadiazol-4-yl)amino]propyl ester
• 132305-66-9
• C22H18 F N7 O6
• 0
• .

• 4-Pyridinecarboxylicacid, 2-methoxy-, hydrazide
• 19353-97-0
• C7H9 N3 O2
• 0
• .

• 4-Morpholinepropanamine,N-[(2-chlorophenyl)methyl]-
• 107922-87-2
• C14H21 Cl N2 O
• 268.78
• .

• 4-Quinazolinamine,2-(3,4-dihydro-6,7-dimethoxy-2(1H)-isoquinolinyl)-N-[2-(3,4-dimethoxyphenyl)ethyl]-6,7-dimethoxy-,hydrochloride (1:1)
• 158701-36-1
• C31H36 N4 O6 . Cl H
• .

• 4,6(1H,5H)-Pyrimidinedione,dihydro-5-phenyl-5-[2-(1-piperidinyl)ethyl]-2-thioxo-, hydrochloride (1:1)
• 1162-23-8
• C17H21 N3 O2 S . Cl H
• 367.8935
• .

• 4H,8H-Benzo[1,2-b:3,4-b']dipyran-4-one,2,3-dihydro-8,8-dimethyl-6-(3-methyl-2-butenyl)-2-phenyl-, (2S)- (9CI)
• 159650-13-2
• C25H26 O3
• .

• 4(1H)-Pyrimidinone,2,3-dihydro-5-(1-methylethyl)-1-[(phenylmethoxy)methyl]-6-(phenylseleno)-2-thioxo-
• 172255-98-0
• C21H22 N2 O2 S Se
• 445.4366
• .

• 4-Quinolinol, 3-phenyl-
• 17052-37-8
• C15H11 N O
• 221.2539
• .

• 4(3H)-Quinazolinone,2-phenyl-3-[[4-(1-piperidinylcarbonyl)phenyl]amino]-
• 131604-11-0
• C26H24 N4 O2
• 424.4944
• .

• 4H-1,3-Thiazino[5,6-b]quinoxalin-4-one,2-[(3-chlorophenyl)amino]-
• 154371-18-3
• C16H9 Cl N4 O S
• 340.7869
• .

• 4H-Furo[2,3-h]-1-benzopyran-4-one,2,3,8,9-tetrahydro-5-methoxy-8-(1-methylethenyl)-2-phenyl- (9CI)
• 104777-96-0
• C21H20 O4
• .