• 4H-1,2,4-Triazole,4-methyl-3-(4-methylphenyl)-5-(methylsulfinyl)-
• 116850-71-6
• C11H13 N3 O S
• 235.3054
• .

• 4(1H)-Pyrimidinethione,2-amino-6-chloro-
• 6310-02-7
• C₄H₄ClN₃S
• 0
• .

• 4H-Imidazol-4-one,3,5-dihydro-2-(4-methoxyphenyl)-3-[4-(4-morpholinyl)phenyl]-5-(phenylmethylene)-
• 86818-85-1
• C27H25 N3 O3
• 439.5057
• .

• 4-Quinolinecarboxylicacid, 2-(3-pyridinyl)-, ethyl ester
• 5471-13-6
• C17H14 N2 O2
• 0
• .

• 4H-1-Benzopyran-4-one,3,5,7-trihydroxy-2-(2-hydroxy-4-methoxyphenyl)-
• 95065-10-4
• C16H12 O7
• 316.2623
• .

• 4H-Pyrazolo[3,4-d]pyrimidin-4-imine,1,5-dihydro-1,5-dimethyl-
• 6267-41-0
• C7H9 N5
• 163.1799
• .

• 4(3H)-Pyrimidinone,2,6-diamino-5-nitro-
• 3346-23-4
• C4H5 N5 O3
• 171.1142
• .

• 4,6-Pyrimidinediamine,N4,N4,N6-trimethyl-5-nitro-
• 1928-70-7
• C7H11 N5 O2
• 197.1945
• .

• 4,8-Epoxy-1H-cyclohepta[c]furan-1,3(3aH)-dione,4,5,8,8a-tetrahydro-
• 6708-73-2
• C9H8 O4
• .

• 4H-1-Benzothiopyran-4-one,2,3-dihydro-8-methoxy-, O-[3-(cyclohexylamino)-2-hydroxypropyl]oxime
• 68717-93-1
• C19H28 N2 O3 S
• 364.5022
• .

• 4(3H)-Quinazolinone,3-[3-[[bis(2-chloroethyl)amino]methyl]-4-methoxyphenyl]-2-methyl-
• 69561-13-3
• C21H23 Cl2 N3 O2
• 420.3322
• .

• 4-Thiazolidinone,5-[(4-chlorophenyl)methylene]-2-thioxo-3-(9H-xanthen-9-yl)-
• 6326-10-9
• C23H14 Cl N O2 S2
• 435.9458
• .

• 4,7-Methano-1H-indene-1,2-diol,3,4,5,6,7,8,8-heptachloro-2,3,3a,4,7,7a-hexahydro-
• 27950-49-8
• C10H7 Cl7 O2
• .

• 4-Pyrimidinamine,5-(2-chlorophenyl)-
• 56239-12-4
• C10H8 Cl N3
• 205.6436
• .

• 4-Pyridinecarboxaldehyde, O-dodecyloxime, 1-oxide
• 72990-56-8
• C₁₈H₃₀N₂O₂
• 306.443
• .

• 4H-[1,2,4]Triazolo[4,3-a][1,5]benzodiazepine,9-chloro-5,6-dihydro-1-(2-methoxyphenyl)-4-methyl-
• 54028-83-0
• C18H17 Cl N4 O
• 340.8068
• .

• 4H-Thiopyran
• 289-70-3
• C5H6 S
• 98.1661
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 3,3-dimethyl-7-oxo-6-[(2-thienylacetyl)amino]-, (2S,5R,6R)- (9CI)
• 13268-65-0
• C14H16 N2 O4 S2
• .

• 4-Pyrimidineacetamide,2-(4-chlorophenyl)-N-hydroxy-6-[[4-(1-piperidinylcarbonyl)phenyl]amino]-
• 57630-90-7
• C24H24 Cl N5 O3
• 465.9321
• .

• 4H-Pyrazolo[3,4-d]pyridazin-4-one,1,5-dihydro-3-methyl-7-(phenylmethyl)-
• 63195-12-0
• C13H12 N4 O
• 240.2606
• .

• 4H-1-Benzopyran-4-one,5-hydroxy-6-[2-hydroxy-5-(5-hydroxy-7-methoxy-4-oxo-4H-1-benzopyran-2-yl)phenyl]-2-(4-hydroxyphenyl)-7-methoxy-
• 133336-97-7
• C32H22 O10
• .

• 4H-Cyclobut[e]inden-4-one,1,2,4a,5,6,7,7a,7b-octahydro-2,7a-dihydroxy-6-(hydroxymethyl)-3,6,7b-trimethyl-,(2S,4aR,6R,7aR,7bS)-
• 194807-77-7
• C15H22 O4
• .

• 4H-1,2-Benzoxazine,4-(3-furanyl)-4a,5,6,7,8,8a-hexahydro-3-methyl-8a-[(trimethylsilyl)oxy]-,2-oxide, (4R,4aS,8aS)-rel-
• 124070-89-9
• C16H25 N O4 Si
• 323.4595
• .

• 4H-Pyrimido[6,1-a]isoquinolin-4-one,2-[(2-chloro-6-methylphenyl)imino]-2,3,6,7-tetrahydro-9,10-dimethoxy-3,7-dimethyl-,hydrochloride (1:1)
• 108445-85-8
• C23H24 Cl N3 O3 . Cl H
• 462.3689
• .

• 4H-Dibenzo[de,g]quinoline-4,5(6H)-dione,2-hydroxy-1-methoxy-6-methyl-
• 109771-09-7
• C18H13 N O4
• 307.3001
• .

• 4H-Pyran-4-one,3-[[6-O-[(2Z)-3-(4-hydroxyphenyl)-1-oxo-2-propen-1-yl]-b-D-glucopyranosyl]oxy]-2-methyl-
• 28876-17-7
• C21H22 O10
• 0
• .

• 4-Quinazolinamine,6-bromo-2-[5-bromo-2-[2-(1-pyrrolidinyl)diazenyl]phenyl]-
• 62888-08-8
• C18H16 Br2 N6
• 476.1678
• .

• 4(3H)-Quinazolinone,3-[4-[[(2-hydroxyphenyl)methylene]amino]phenyl]-2-methyl-
• 36934-37-9
• C22H17 N3 O2
• 355.3893
• .

• 4H-Imidazo[4,5-d]-1,2,3-triazin-4-one,3-butyl-3,7-dihydro-
• 7495-65-0
• C8H11 N5 O
• 193.2058
• .

• 4H-1,3-Dioxino[4,5-c]pyridine,5-[[(4-chlorophenyl)thio]methyl]-2,2,8-trimethyl-
• 6953-29-3
• C17H18 Cl N O2 S
• 335.8483
• .

• 4H-1-Benzopyran-4-one,3-(3,4-dimethoxyphenyl)-5,7-dihydroxy-6-methoxy-
• 78134-85-7
• C18H16 O7
• 0
• .

• 4-Pyrimidinecarboxamide, 2-chloro-
• 22536-66-9
• C₅H₄ClN₃O
• 157.5578
• .

• 4(3H)-Pyrimidinone,2-phenyl-5-(phenylmethoxy)-
• 13922-55-9
• C17H14 N2 O2
• 278.3053
• .

• 4-Pyridinecarboxylicacid, 1,2,3,6-tetrahydro-1-methyl-, propyl ester
• 77035-54-2
• C10H17 N O2
• 0
• .

• 4-Pyrimidinecarboxylicacid, 6-methoxy-2-(methylthio)-
• 15584-03-9
• C7H8 N2 O3 S
• 0
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 6-[[(2,6-dichlorophenyl)methoxyacetyl]amino]-3,3-dimethyl-7-oxo-,monosodium salt, (2S,5R,6R)- (9CI)
• 36518-22-6
• C17H18 Cl2 N2 O5 S . Na
• .

• 4,7-Octadien-2-ol,2,6-dimethyl-, (4Z,6S)-
• 33303-11-6
• C10H18 O
• 0
• .

• 4-Bromobenzocyclobutene
• 1073-39-8
• C₈H₇Br
• 183.04
• .

• 4-Pyridinemethanol, a-2-piperidinyl-2,6-bis[4-(trifluoromethyl)phenyl]-,hydrochloride (1:1)
• 68690-15-3
• C25H22 F6 N2 O . Cl H
• 480.4454
• .

• 4,6(1H,5H)-Pyrimidinedione,dihydro-1,3-dimethyl-5-nitroso-2-thioxo-
• 64268-04-8
• C6H7 N3 O3 S
• 201.2031
• .

• 4H-Cyclopenta[def]phenanthren-4-one
• 5737-13-3
• C₁₅H₈O
• 204.2234
• .

• 4H,8H-Benzo[1,2-b:3,4-b']dipyran-4-one,5-hydroxy-3-(4-hydroxyphenyl)-8,8-dimethyl-
• 76166-59-1
• C20H16 O5
• .

• 4H-Benzo[4,5]cyclohepta[1,2-b]furan-3-carboxamide,N,N-diethyl-9,10-dihydro-4-oxo-
• 83494-75-1
• C18H19 N O3
• 0
• .

• 4(1H)-Pyridinone,3-methoxy-2-methyl-1-b-D-ribofuranosyl-
• 87597-93-1
• C12H17 N O6
• 271.2665
• .

• 4,7-Methanofuro[3,2-c]oxacycloundecin-2,6(4H,7H)-dione,8,9,12,12a-tetrahydro-7,13-dihydroxy-3,11-dimethyl- (9CI)
• 139681-97-3
• C15H18 O6
• .

• 4,5-Oxazoledicarboxamide,2-(4-chlorophenyl)-
• 42489-42-9
• C11H8 Cl N3 O3
• 265.6525
• .

• 4H-[1,2,4]Triazolo[3,4-c][1,4]benzoxazine,1-(4-chlorophenyl)-
• 93299-78-6
• C15H10 Cl N3 O
• .

• 4-Phenanthrenecarboxylicacid, 10-bromo-, methyl ester
• 26698-23-7
• C16H11 Br O2
• 315.1613
• .

• 4(3H)-Pyrimidinone,5-chloro-6-methyl-2-(methylthio)-
• 6328-59-2
• C6H7 Cl N2 O S
• 190.6506
• .

• 4-Piperidinol,4-phenyl-1-(3-phenyl-2-propen-1-yl)-
• 59609-39-1
• C20H23 N O
• 293.4027
• .