• 4(3H)-Pyrimidinone,5-methyl-2-(methylthio)-
• 20651-30-3
• C₆H₈N₂OS
• 156.2055
• .

• 4-Piperidinecarboxylicacid, 1-methyl-4-[(phenoxycarbonyl)oxy]-, methyl ester
• 101418-13-7
• C15H19 N O5
• 293.3151
• .

• 4H-1-Benzopyran-4-one,2,3-dihydro-7-hydroxy-2-(4-hydroxyphenyl)-, (2S)-
• 578-86-9
• C₁₅H₁₂O₄
• 256.25
• .

• 4-Morpholinecarbothioicacid, S-(phenylmethyl) ester
• 56368-47-9
• C12H15 N O2 S
• 0
• .

• 4-Pyrimidinecarboxylicacid, 3,4,5,6-tetrahydro-2-methyl-, (4S)-
• 96702-03-3
• C6H10 N2 O2
• 142.16
• .

• 4H-Indeno[2,1-d]isoxazole,3-(2,4-dichlorophenyl)-3a,8b-dihydro-
• 27271-38-1
• C16H11 Cl2 N O
• 304.1706
• .

• 4-Pyrimidinamine,N,N-dimethyl-2-[4-(3,3,3-triphenylpropyl)-1-piperazinyl]-
• 20980-17-0
• C31H35 N5
• 0
• .

• 4H-1,3-Thiazin-2-amine,N-[2-chloro-5-(trifluoromethyl)phenyl]-5,6-dihydro-
• 102396-02-1
• C11H10 Cl F3 N2 S
• 294.7237
• .

• 4-Cyclohexene-1,2-dicarboxylic acid, reaction products with hexahydro-1,3-isobenzofurandione, ((methylphenoxy)methyl)oxirane, phthalic anhydride and 3a,4,7,7a-tetrahydro-1,3-isobenzofurandione
• 73612-25-6
• C10H12O2·C8H10O4·C8H10O3·C8H8O3· C8H4O3
• 0
• .

• 4-Morpholineacetamide,N,N'-[1,4-phenylenebis[(4-methylphenyl)methylene]]bis- (9CI)
• 63710-55-4
• C34H42 N4 O4
• 570.7217
• .

• 4H-Imidazo[1,5-a][1,4]benzodiazepine-3-carboxamide,6-(2-bromophenyl)-8-fluoro-
• 151271-08-8
• C18H12 Br F N4 O
• 0
• .

• 4-Acridinecarboxamide,9-amino-N-[2-(dimethylamino)ethyl]-5-(methylsulfonyl)-
• 106589-37-1
• C19H22 N4 O3 S
• 386.468
• .

• 4H-Dibenzo[de,g]quinolin-9-ol,6-[3-(dimethylamino)propyl]-5,6,6a,7-tetrahydro-1,2,10-trimethoxy-,monohydrochloride, (S)- (9CI)
• 101832-30-8
• C24H32 N2 O4 . Cl H
• 448.9828
• .

• 4-Quinolinamine,2,6,8-trimethyl-N-[4-(4-phenyl-1-piperazinyl)phenyl]-
• 87602-41-3
• C28H30 N4
• 0
• .

• 4-Penten-1-one,1-(5,5-dimethyl-1-cyclohexen-1-yl)-
• 56973-85-4
• C13H20 O
• 260-486-7
• 192.2973
• .

• 4-Acridinecarboxamide,9-amino-N-[2-(dimethylamino)ethyl]-2-methyl-, hydrochloride (1:2)
• 100113-03-9
• C19H22 N4 O . 2 Cl H
• 0
• .

• 4-Quinolinecarboxylicacid, 2-(10H-phenothiazin-2-yl)-, ethyl ester
• 64337-42-4
• C24H18 N2 O2 S
• 398.4769
• .

• 4H-1,3,2-Benzoxazaphosphorin-4-one,2,3-dihydro-3-(methylamino)-2-phenyl-, 2-oxide
• 143000-22-0
• C14H13 N2 O3 P
• 288.2384
• .

• 4H-1-Benzopyran-4-one,2-(2-chlorophenyl)-5,7-dihydroxy-8-[(3S,4R)-3-hydroxy-1-methyl-4-piperidinyl]-
• 146426-40-6
• C₂₁H₂₀ClNO₅
• 401.8402
• .

• 4H-1-Benzopyran-4-one,5,8-dihydroxy-6,7-dimethoxy-2-(4-methoxyphenyl)-
• 2798-22-3
• C18H16 O7
• 344.3154
• .

• 4H-1-Benzopyran-4-one,3-(4-fluorophenyl)-7-hydroxy-
• 15584-10-8
• C15H9 F O3
• 256.2285632
• .

• 4-(Bis(benzyl)amino)-3-ethoxybenzenediazonium hexafluorophosphate
• 85099-29-2
• C22H22F6N3OP
• 285-484-3
• 489.3937602
• .

• 4H-1-Benzopyran-4-one,6-chloro-2-phenyl-
• 10420-73-2
• C15H9 Cl O2
• 256.68
• .

• 4H-1-Benzopyran-4-one,2-(3,4-dimethoxyphenyl)-7-hydroxy-5-methyl-
• 15236-03-0
• C18H16 O5
• 312.3166
• .

• 4H-1,3,4-Thiadiazine,5,6-dihydro-4,6-dimethyl-2-[3-(1-pyrrolidinyl)propyl]-
• 15620-49-2
• C12H23 N3 S
• 241.3961
• .

• 4,7-Methano-1H-isoindole-1,3(2H)-dione,4,5,6,7-tetrachloro-3a,4,7,7a-tetrahydro-
• 116761-95-6
• C9H5 Cl4 N O2
• 300.9535
• .

• 4(1H)-Quinolinone,6-bromo-2,3-dihydro-1-(2-methyl-1-oxopropyl)-, 4-oxime
• 81892-48-0
• C13H15 Br N2 O2
• 0
• .

• 4,5-Pyrenedione,3-nitro-
• 102791-32-2
• C16H7 N O4
• 277.2311
• .

• 4H-Pyrrolo[2,3-d]pyrimidin-4-one,3,7-dihydro-3-b-D-ribofuranosyl-
• 30066-71-8
• C11H13 N3 O5
• 267.238
• .

• 4H-Imidazol-4-one,3-[[(2-bromophenyl)methylene]amino]-3,5-dihydro-5-[(4-nitrophenyl)methylene]-2-phenyl-
• 126293-48-9
• C23H15 Br N4 O3
• 475.2942
• .

• 4-Morpholineacetamide,N-(1-methylcyclohexyl)-, hydrochloride (1:1)
• 108751-61-7
• C13H24 N2 O2 . Cl H
• 0
• .

• 4-Oxazolecarboxamide,N-[4-[(2,3-dihydroxybenzoyl)amino]butyl]-N-[3-[(2,3-dihydroxybenzoyl)amino]propyl]-2-(2,3-dihydroxyphenyl)-4,5-dihydro-5-methyl-,(4S,5R)-
• 70393-50-9
• C32H36 N4 O10
• 0
• .

• 4-Piperidinecarboxylicacid, 1-[2-(4-fluorobenzoyl)-2-propen-1-yl]-4-phenyl-, ethyl ester,hydrochloride (1:1)
• 102395-64-2
• C24H26 F N O3 . Cl H
• 0
• .

• 4H-Indol-4-one,5-(1,4-dioxa-8-azaspiro[4.5]dec-8-ylmethyl)-3-ethyl-1,5,6,7-tetrahydro-2-methyl-
• 25331-92-4
• C19H28 N2 O3
• 332.49
• .

• 4H-1-Benzopyran-4-one,2-[4,5-dihydroxy-2-(3-methyl-2-buten-1-yl)phenyl]-5,6-dihydroxy-3-methoxy-
• 150853-99-9
• C21H20 O7
• 0
• .

• 4H-1-Benzopyran-8-carboxylicacid, 3-methyl-4-oxo-2-phenyl-, 1,1-dimethyl-2-(2-methyl-1-piperidinyl)ethylester, hydrochloride (1:1)
• 147528-33-4
• C27H31 N O4 . Cl H
• 470.0003
• .

• 4-Isothiazolecarbonitrile,3-[(cyanomethyl)thio]-5-(methylthio)-
• 24306-38-5
• C7H5 N3 S3
• 227.3297
• .

• 4H-1-Benzopyran-4-one,7-[[6-deoxy-4-O-[6-O-[(2E)-3-(3,4-dihydroxyphenyl)-1-oxo-2-propenyl]-b-D-glucopyranosyl]-a-L-mannopyranosyl]oxy]-3,5-dihydroxy-2-(4-hydroxyphenyl)-(9CI)
• 172274-42-9
• C36H36 O18
• .

• 4H-Pyrrolo[2,3-d]pyrimidin-4-one,1,7-dihydro-7-b-D-ribofuranosyl-(8CI,9CI)
• 2862-16-0
• C11H13 N3 O5
• 267.27
• .

• 4-Pyrimidinamine,2-methoxy-
• 3289-47-2
• C₅H₇N₃O
• 125.12858
• .

• 4,7-Methano-1H-cyclobuta[1',2':3,4]cyclobuta[1,2-f]benzotriazole,3a,4,4a,4b,6a,6b,7,7a-octahydro-
• 31363-97-0
• C11H13 N3
• .

• 4H-1,3,2-Benzoxazaphosphorin-4-one,2,3-dihydro-3-methyl-2-phenyl-, 2-oxide
• 143000-15-1
• C14H12 N O3 P
• 0
• .

• 4-Octadecenoic acid,2-hydroxy-2-(trifluoromethyl)-, (4E)-
• 135014-48-1
• C19H33 F3 O3
• 0
• .

• 4-Imidazolidinone,5,5-dimethyl-3-(2-propen-1-yl)-2-thioxo-
• 53517-95-6
• C8H12 N2 O S
• 258-596-5
• 184.25868
• .

• 4-Acridinecarboxamide,1-chloro-N-[2-(dimethylamino)ethyl]-
• 106626-67-9
• C18H18 Cl N3 O
• 327.808
• .

• 4-Piperidinol,1-(1-methylpropyl)-4-phenyl-, 4-propanoate, hydrochloride (1:1)
• 63916-34-7
• C18H27 N O2 . Cl H
• 325.8734
• .

• 4-Oxazolemethanol,4,5-dihydro-4-methyl-2-(15-methylhexadecyl)-
• 93841-66-8
• C22H43 N O2
• 299-037-5
• 353.58232
• .

• 4H-1-Benzopyran-4-one,3-[(3-O-acetyl-6-deoxy-2-O-b-D-glucopyranosyl-a-L-mannopyranosyl)oxy]-5,7-dihydroxy-2-(4-methoxyphenyl)-8-(3-methyl-2-buten-1-yl)-
• 118525-37-4
• C35H42 O16
• .

• 4H-Indol-4-one,3-ethyl-1,5,6,7-tetrahydro-2-methyl-5-(4-morpholinylmethyl)-, hydrochloride(1:1)
• 15622-65-8
• C₁₆H₂₅ClN₂O₂
• 312.88
• .

• 4,8,12,15,19,23-Hexaazahexacosane-1,26-diamine
• 84145-44-8
• C20H50 N8
• 282-271-7
• 402.6646
• .