• 4-Thiazolidinone,2-(3,4-dimethoxyphenyl)-5-methyl-
• 82697-73-2
• C12H15 N O3 S
• 0
• .

• 4,6(1H,5H)-Pyrimidinedione,dihydro-1-(4-methoxyphenyl)-2-thioxo-
• 28921-29-1
• C11H10 N2 O3 S
• 250.2737
• .

• 4H-1-Benzopyran-4-one,3-methyl-2-phenyl-8-(1-propen-1-yl)-
• 3468-00-6
• C19H16 O2
• 222-424-7
• 276.32914
• .

• 4-Pyrimidinecarboxylicacid, 1,2,3,6-tetrahydro-2,6-dioxo-, zinc salt (2:1)
• 68399-76-8
• C₅H₄N₂O₄ ·1/2 Zn
• 269-988-0
• 411.59
• .

• 4-Morpholinecarboximidamide,N-cyclohexyl-N'-tricyclo[3.3.1.13,7]dec-1-yl-, hydrochloride (1:1)
• 57568-80-6
• C21H35 N3 O . Cl H
• 381.98
• .

• 4-Thiazolidinone,3-ethyl-5-[(phenylamino)methylene]-2-thioxo-, (Z)- (9CI)
• 118050-10-5
• C12H12 N2 O S2
• 264.3665
• .

• 4H-1,3-Thiazin-4-one,2-(2,6-dichlorophenyl)-
• 30674-94-3
• C10H5 Cl2 N O S
• .

• 4-Cyclohexene-1,3-dione,2,5-dihydroxy-2,6-bis(3-methyl-2-buten-1-yl)-4-(2-methyl-1-oxobutyl)-
• 28374-89-2
• C21H30 O5
• 362.4599
• .

• 4,6(1H,5H)-Pyrimidinedione,1-[(2-furanylmethylene)amino]dihydro-3-[2-(1H-indol-3-yl)acetyl]-2-thioxo-
• 161806-27-5
• C19H14 N4 O4 S
• 394.4039
• .

• 4(1H)-Pyrimidinone,2-amino-1-b-D-ribofuranosyl-
• 489-59-8
• C9H13 N3 O5
• 0
• .

• 4H-Furo[2,3-b]oxocin-2(9aH)-one,5,8-dihydro-4,8-dihydroxy-7-[2-(3,4,4a,5,6,7,8,8a-octahydro-2,5,5,8a-tetramethyl-1-naphthalenyl)ethyl]-(9CI)
• 145427-70-9
• C25H36 O5
• .

• 4H-Pyrimido[6,1-a]isoquinolin-4-one,2,3,6,7-tetrahydro-9,10-dimethoxy-3,7-dimethyl-2-(phenylimino)-, hydrochloride(1:1)
• 108445-72-3
• C22H23 N3 O3 . Cl H
• 413.8973
• .

• 4-Thiazoleacetic acid,2-[(chloroacetyl)amino]-a-(methoxyimino)-, (aZ)- (9CI)
• 64486-18-6
• C8H8 Cl N3 O4 S
• 264-916-4
• 234.66008
• .

• 4-Thiazolidinecarboxylicacid, 2-(2-thienyl)-
• 32451-19-7
• C8H9 N O2 S2
• 251-055-4
• 215.29
• .

• 4-Oxa-1-azabicyclo[3.2.0]heptan-7-one
• 64341-46-4
• C5H7 N O2
• 0
• .

• 4-Piperidinamine,1-(2-ethoxyethyl)-3-methyl-N-phenyl-, cis- (9CI)
• 125080-82-2
• C16H26 N2 O
• 0
• .

• 4-Thiazolidinone,3-(2-benzothiazolyl)-2-(2-chlorophenyl)-
• 69791-53-3
• C16H11 Cl N2 O S2
• 346.8543
• .

• 4H-Imidazol-4-one,5-[(4-chlorophenyl)methylene]-3,5-dihydro-2-phenyl-3-[(phenylmethylene)amino]-
• 126245-06-5
• C23H16 Cl N3 O
• 385.8456
• .

• 4H,8H-Benzo[1,2-b:3,4-b']dipyran-4-one,5-hydroxy-3-(4-hydroxyphenyl)-8,8-dimethyl-6-(3-methyl-2-buten-1-yl)-
• 482-53-1
• C25H24 O5
• 404.4551
• .

• 4H-1-Benzopyran-2-carboxamide,N-[4-[[(aminoiminomethyl)amino]sulfonyl]phenyl]-6-chloro-4-oxo-
• 27455-35-2
• C17H13 Cl N4 O5 S
• 420.8269
• .

• 4,6(1H,5H)-Pyrimidinedione,dihydro-1-[[2-oxo-2-(10H-phenothiazin-10-yl)ethyl]amino]-3-phenyl-5-(phenylmethylene)-2-thioxo-
• 141177-61-9
• C31H22 N4 O3 S2
• 562.6614
• .

• 4(1H)-Pyridinone,1-(2-chloro-3,5-dimethoxyphenyl)-2-(4-fluorophenyl)-3-methyl-6-phenyl-
• 114231-14-0
• C26H21 Cl F N O3
• 0
• .

• 4-Heptanone,1,7-dichloro-1,1,7,7-tetrafluoro-2,6-dihydroxy-2,6-bis(trifluoromethyl)-
• 101913-83-1
• C9H6 Cl2 F10 O3
• 423.0322
• .

• 4-Morpholinecarboximidothioicacid, N-methyl-, imino[(4-methoxyphenyl)amino]methyl ester, hydrochloride (1:2)
• 93368-81-1
• C14H20 N4 O2 S . 2 Cl H
• 0
• .

• 4H-1-Benzopyran-4-one,2-(3,4-dihydroxyphenyl)-7-hydroxy-3,5-dimethoxy-
• 1486-66-4
• C17H14 O7
• 330.2889
• .

• 4-Pyridinecarboxamide,N-[3,3-bis(4-chlorophenyl)propyl]-
• 102311-16-0
• C21H18 Cl2 N2 O
• 385.2864
• .

• 4H-1-Benzopyran-4-one,5-(b-D-glucopyranosyloxy)-2,3-dihydro-7-hydroxy-2-(4-hydroxyphenyl)-
• 23711-00-4
• C21H22 O10
• .

• 4(3H)-Pyrimidinone,5-butyl-6-methyl-
• 80257-41-6
• C9H14 N2 O
• 0
• .

• 4H-1-Benzopyran-4-one,7-[[6-O-(4-carboxy-3-hydroxy-3-methyl-1-oxobutyl)-b-D-glucopyranosyl]oxy]-5-hydroxy-6,8-dimethyl-2-phenyl-
• 171439-54-6
• C29H32 O13
• .

• 4H-1-Benzopyran-2-carboxylicacid, 6-nitro-4-oxo-, ethyl ester
• 30095-79-5
• C12H9 N O6
• 250-047-8
• 263.203
• .

• 4-Heptanamine,4-propyl-N-2-propyn-1-yl-, hydrochloride (1:1)
• 64467-48-7
• C13H25 N . Cl H
• 231.8052
• .

• 4,6-Pyrimidinediol,2-amino-5-m-toluidino- (7CI)
• 91952-14-6
• C11H12 N4 O2
• 0
• .

• 4H-1-Benzopyran-4-one,2-[(2R,3R)-2,3-dihydro-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-1,4-benzodioxin-6-yl]-5,7-dihydroxy-,rel-
• 51419-48-8
• C25H20 O9
• 0
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 6-[[(5R)-5-amino-5-carboxy-1-oxopentyl]amino]-3,3-dimethyl-7-oxo-,(2S,5R,6R)-
• 525-94-0
• C14H21 N3 O6 S
• 0
• .

• 4,6(1H,5H)-Pyrimidinedione,dihydro-5-(1-methylbutyl)-5-(2-propen-1-yl)-2-thioxo-
• 77-27-0
• C12H18 N2 O2 S
• 201-018-3
• 254.38
• .

• 4H-1-Benzopyran-4-one,3-[[6-O-(6-deoxy-a-L-mannopyranosyl)-b-D-galactopyranosyl]oxy]-7-[(6-deoxy-a-L-mannopyranosyl)oxy]-5-hydroxy-2-(4-hydroxyphenyl)-
• 301-19-9
• C33H40 O19
• 206-113-3
• 740.6593
• .

• 4-Thiazolidinone,3-[3-(dimethylamino)propyl]-2-phenyl-, hydrochloride (1:1)
• 141955-94-4
• C14H20 N2 O S . Cl H
• 300.8473
• .

• 4-Quinolinecarboxylicacid, 3-hydroxy-2-phenyl-
• 485-89-2
• C16H11 N O3
• 207-624-4
• 265.28
• .

• 4-Penten-2-one,4-methyl-
• 3744-02-3
• C6H10 O
• 0
• .

• 4(3H)-Pyrimidinone,2,6-diamino-5-[2-(2-ethylphenyl)diazenyl]-
• 30188-93-3
• C12H14 N6 O
• 258.2792
• .

• 4(3H)-Pyrimidinone,2-(methylthio)-3-[4-[3-(4-phenyl-1-piperazinyl)propoxy]phenyl]-
• 119321-63-0
• C24H28 N4 O2 S
• 326.4326
• .

• 4(3H)-Quinazolinone,3-methyl-2-(2-methylphenyl)-
• 24303-76-2
• C16H14 N2 O
• 250.2952
• .

• 4-Piperidinemethanol, α-phenyl-1-(2-phenylethyl)-
• 107703-78-6
• C₂₀H₂₅NO
• 376.19
• .

• 4H-1,3,5-Oxadiazine-4-thione,tetrahydro-3,5-dimethyl-
• 25952-35-6
• C5H10 N2 O S
• 247-360-7
• 146.23
• .

• 4H-1-Benzopyran-4-one,5,7-dihydroxy-3-(5-hydroxy-2,2-dimethyl-2H-1-benzopyran-8-yl)-
• 117204-81-6
• C20H16 O6
• 370.3958
• .

• 4-Quinolinol, 8-chloro-
• 57797-97-4
• C9H6 Cl N O
• 179.6
• .

• 4-Pyrimidinecarboxylicacid, 3,4,5,6-tetrahydro-2-methyl-
• 117305-84-7
• C6H10 N2 O2
• 0
• .

• 4-Oxazolidineaceticacid, 2,5-dioxo-
• 6542-24-1
• C5H5 N O5
• 229-456-0
• 159.0969
• .

• 4(3H)-Quinazolinone,3-[[(2-chlorophenyl)[2-(2-chlorophenyl)diazenyl]methylene]amino]-2-methyl-
• 110605-07-7
• C22H15 Cl2 N5 O
• 436.2934
• .

• 4H-[1,2,4]Triazino[3,4-a]phthalazin-4-one,3-(4-methoxyphenyl)-7-(1-pyrrolidinyl)-
• 126650-80-4
• C21H19 N5 O2
• 373.4079
• .