• 4(3H)-Pyrimidinone,5-methoxy-2-(methylthio)-
• 1671-08-5
• C₆H₈N₂O₂S
• 0
• .

• 4H-4,7-Ethanothieno[2,3-b]pyridine-3-carboxylicacid, 2-[(2,2-diphenylacetyl)amino]-5,6-dihydro-, ethyl ester
• 112302-59-7
• C26H26 N2 O3 S
• 446.5612
• .

• 4H-1,3-Benzoxazin-4-one,2,3-dihydro-2-(4-methylphenyl)-3-(4-nitrobenzoyl)-
• 114439-75-7
• C22H16 N2 O5
• 388.3728
• .

• 4H-Pyran-4-thione,2,6-dimethyl-
• 1004-37-1
• C7H8 O S
• 0
• .

• 4-Pyridinecarboxaldehyde,5-(hydroxymethyl)-2-methyl-3-(sulfooxy)-
• 107467-08-3
• C8H9 N O6 S
• 0
• .

• 4-Morpholineaceticacid,3-ethenyldodecahydro-6,10,10b-trihydroxy-3,4a,7,7,10a-pentamethyl-1-oxo-1H-naphtho[2,1-b]pyran-5-ylester, hydrochloride, [3R-(3a,4ab,5b,6b,6aa,10a,10ab,10ba)]- (9CI)
• 105535-53-3
• C26H41 N O8 . Cl H
• 532.0666
• .

• 4-Morpholinepropanamine,N-[(4-chlorophenyl)methyl]-
• 107921-37-9
• C14H21 Cl N2 O
• 268.78
• .

• 4(3H)-Quinazolinone,3-[2-([1,1'-biphenyl]-2-yloxy)ethyl]-
• 138841-13-1
• C22H18 N2 O2
• 342.3905
• .

• 4-Thiazolidinone,3,3'-(1,3-propanediyl)bis[2-(5-methyl-2-thienyl)-, (R*,R*)- (9CI)
• 157247-98-8
• C19H22 N2 O2 S4
• 438.6502
• .

• 4-Thiazolemethanol,4,5-dihydro-2-(2-hydroxyphenyl)-, (4R)-
• 112515-23-8
• C10H11 N O2 S
• .

• 4H-Pyrazolo[3,4-d]pyrimidine-4-thione,1,5-dihydro-3-methyl-1-phenyl-
• 14246-99-2
• C12H10 N4 S
• 242.2996
• .

• 4(3H)-Pyrimidinone,2-amino-5,6-dihydro-
• 15231-27-3
• C4H7 N3 O
• 0
• .

• 4-Pyridinecarboxylicacid, 2-(diethylamino)-1-phenylethyl ester, hydrochloride (1:2)
• 108367-25-5
• C18H22 N2 O2 . 2 Cl H
• 371.3014
• .

• 4-Piperidinemethanamine,1-[2-(4-chlorophenyl)ethyl]-4-phenyl-
• 105378-77-6
• C20H25 Cl N2
• 328.8789
• .

• 4H-1-Benzopyran-4-one,2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2-O-b-D-xylopyranosyl-a-L-arabinofuranosyl)oxy]-
• 112693-20-6
• C25H26 O15
• .

• 4(3H)-Pyrimidinethione,5-amino-2-chloro-6-(trifluoromethyl)-
• 1480-67-7
• C5H3 Cl F3 N3 S
• 229.6106
• .

• 4H-1-Benzopyran-4-one,3-[5-(1,1-dimethyl-2-propen-1-yl)-2,3-dihydroxy-4-methoxyphenyl]-7-hydroxy-
• 166334-58-3
• C21H20 O6
• .

• 4-Pyrimidinecarboxylicacid, 6-amino-5-ethyl-1,2-dihydro-2-oxo-
• 13166-61-5
• C7H9 N3 O3
• 183.1647
• .

• 4(5H)-Thiazolone,2-amino-5-(phenylmethylene)-
• 14230-00-3
• C10H8 N2 O S
• 204.2483
• .

• 4-Pyridinecarboxylicacid, 2-[(dimethylamino)methylene]hydrazide
• 16825-24-4
• C9H12 N4 O
• 192.2178
• .

• 4(3H)-Pyrimidinethione,6-amino-
• 1193-23-3
• C4H5 N3 S
• 127.1676
• .

• 4(1H)-Pyridinone,1-methoxy-
• 1703-18-0
• C6H7 N O2
• 125.1253
• .

• 4-Pyridinecarboxylicacid, 2-cyclohexylhydrazide
• 15407-87-1
• C12H17 N3 O
• 219.2829
• .

• 4H-Pyrido[2,1-a]phthalazin-4-one,1-[(3-methoxy-1-azetidinyl)carbonyl]-3-phenyl-
• 110924-78-2
• C23H19 N3 O3
• 385.4153
• .

• 4H-Naphtho[1,2-b]pyran-3-carbonitrile,2-amino-4-(3-pyridinyl)-
• 149550-46-9
• C19H13 N3 O
• .

• 4-Pyridinecarboxylicacid, 2-(1-amino-3-ethoxy-3-oxo-1-propen-1-yl)hydrazide
• 146255-38-1
• C11H14 N4 O3
• 250.25
• .

• 4-Piperidinecarboxylicacid, 1-[4-[(1,3-benzodioxol-5-ylmethyl)amino]-6-chloro-2-quinazolinyl]-,sodium salt (1:1)
• 150452-19-0
• C22H21 Cl N4 O4 . Na
• .

• 4H-Pyrimido[6,1-a]isoquinolin-4-one,2,3,6,7-tetrahydro-9,10-dimethoxy-3,7-dimethyl-2-[(2,4,6-trimethylphenyl)imino]-,monohydrochloride, (S)- (9CI)
• 108445-87-0
• C25H29 N3 O3 . Cl H
• 455.977
• .

• 4H-1-Benzopyran-4-one,5,7-dihydroxy-2-(2-hydroxy-4,5-dimethoxyphenyl)-3,6,8-trimethoxy-
• 100363-94-8
• C20H20 O10
• 0
• .

• 4H-Naphtho[2,1-c]pyran-4-one,10-(acetyloxy)-2-(3-furanyl)-7-(b-D-glucopyranosyloxy)dodecahydro-4a,9-dihydroxy-10b-methyl-,(2S,4aS,6aS,7R,9S,10R,10aR,10bS)- (9CI)
• 161161-70-2
• C26H36 O13
• .

• 4H-Pyrido[1,2-a]pyrimidine-3-carboxamide,N-(4-fluorophenyl)-6-methyl-4-oxo-
• 125055-66-5
• C16H12 F N3 O2
• 297.2838
• .

• 4-Thiazolidinecarboxamide,3-benzoyl-N-(1-phenylethyl)-
• 104682-67-9
• C19H20 N2 O2 S
• 340.4393
• .

• 4(1H)-Pyrimidinone,tetrahydro-3-phenyl-2-thioxo-
• 1203-29-8
• C10H10 N2 O S
• 206.2642
• .

• 4,12c-Ethano-12cH-anthra[9,1-bc]oxepin-7-carboxylicacid, 2,3,4,4a,5,6,7,7a,8,9,12,12b-dodecahydro-3-methyl-9,12-dioxo-,(3R,4R,4aR,7S,7aR,12bR,12cS)-rel- (9CI)
• 112946-29-9
• C21H24 O5
• .

• 4,9(1H,4aH)-Phenanthrenedione,2,3,10,10a-tetrahydro-6,10-dihydroxy-1,1,4a-trimethyl-7-(1-methylethyl)-,(4aS,10S,10aS)-
• 119767-12-3
• C20H26 O4
• .

• 4(5H)-Thiazolone,2-[(4-methylphenyl)amino]-
• 17385-68-1
• C10H10 N2 O S
• 0
• .

• 4-Pyridinecarboxylicacid, 2-(6-chloro-2-phenyl-4-quinolinyl)hydrazide
• 159586-84-2
• C21H15 Cl N4 O
• 374.823
• .

• 4-Pyrimidinecarboxylicacid, 1,6-dihydro-6-oxo-2-(propylthio)-
• 16490-25-8
• C8H10 N2 O3 S
• 214.2416
• .

• 4H-Pyrido[1,2-a]pyrimidin-4-one,2-chloro-7-methyl-
• 17326-18-0
• C9H7 Cl N2 O
• 0
• .

• 4-Morpholineaceticacid, 2-[(5-nitro-2-furanyl)methylene]hydrazide
• 1091-11-8
• C11H14 N4 O5
• 282.2527
• .

• 4,17-Dioxabicyclo[14.1.0]heptadeca-6,14-diene-5,13-dione,2-[[(6-deoxy-2,3-di-O-methyl-b-D-allopyranosyl)oxy]methyl]-3-ethyl-2-hydroxy-8,12-dimethyl-9-[[3,4,6-trideoxy-3-(dimethylamino)-b-D-xylo-hexopyranosyl]oxy]-,(1R,2S,3R,6E,8S,10R,12R,14E,16S)- (9CI)
• 129046-73-7
• C36H59 N O13
• .

• 4H-1,3,4-Oxadiazin-5(6H)-one,2-(2-methylimidazo[1,2-a]pyridin-3-yl)-
• 107719-74-4
• C11H10 N4 O2
• 230.2227
• .

• 4H-Pyrazolo[3,4-d]pyrimidin-4-one,1,5-dihydro-1-tricyclo[3.3.1.13,7]dec-1-yl-
• 114562-87-7
• C15H18 N4 O
• 270.3296
• .

• 4H-Imidazol-4-one,3,5-dihydro-2-phenyl-5-(phenylmethylene)-3-[(phenylmethylene)amino]-
• 102546-05-4
• C23H17 N3 O
• 256.91536
• .

• 4H-1-Benzopyran-4-one,5,7-dihydroxy-3-(5-hydroxy-2,2-dimethyl-2H-1-benzopyran-8-yl)-6,8-bis(3-methyl-2-buten-1-yl)-
• 156281-31-1
• C30H32 O6
• .

• 4-Pyridinecarboxylicacid, 2-[[4-(dimethylamino)phenyl]methylene]hydrazide
• 13059-77-3
• C15H16 N4 O
• 268.3137
• .

• 4(3H)-Pteridinone,2-amino-7,8-dihydro-6-[(2S)-2-hydroxy-1-oxopropyl]-
• 17094-01-8
• C9H11 N5 O3
• 237.21534
• .

• 4H-1-Benzopyran-4-one,5-[[6-O-acetyl-4-O-(6-deoxy-a-L-mannopyranosyl)-b-D-glucopyranosyl]oxy]-7-hydroxy-2-(4-hydroxyphenyl)-
• 109232-77-1
• C29H32 O15
• 0
• .

• 4H-1-Benzopyran-4-one,2,3-dihydro-5-hydroxy-3-(2-hydroxy-4-methoxyphenyl)-7-methoxy-6-(3-methyl-2-buten-1-yl)-,(3S)-
• 156162-03-7
• C22H24 O6
• .

• 4H-1-Benzopyran-4-one,2-(2,4-dihydroxyphenyl)-2,3-dihydro-7-hydroxy-8-(3-methyl-2-buten-1-yl)-, (2S)-
• 130252-50-5
• C20H20 O5
• .