• 4,20-Dioxabicyclo[15.2.1]eicosa-7,9,13-trien-5-one,3-[(1R,4E)-1,7-dimethyl-3-methylene-4,7-octadien-1-yl]-2,11,12-trihydroxy-6-methyl-,(1S,2R,3R,6R,7E,9E,11R,12R,13E,17S)-
• 126693-94-5
• C30H44 O6
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid,6-[[[[[1,5-dihydro-2-(4-methyl-1-piperazinyl)-5-oxopyrido[2,3-d]pyrimidin-6-yl]carbonyl]amino](4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-,[2S-[2a,5a,6b(S*)]]- (9CI)
• 114082-57-4
• C29H32 N8 O7 S
• 636.6788
• .

• 4,10a(1H)-Phenanthrenediol,7-ethenyl-2,3,4,4a,4b,5,6,7,9,10-decahydro-1,1,4a,7-tetramethyl-,(4S,4aS,4bS,7R,10aR)-
• 161161-47-3
• C20H32 O2
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 6-[[[1-(3-chlorophenyl)cyclopentyl]carbonyl]amino]-3,3-dimethyl-7-oxo-,monosodium salt, [2S-(2a,5a,6b)]- (9CI)
• 143407-68-5
• C20H23 Cl N2 O4 S . Na
• 0
• .

• 4H-1-Benzothiopyran-4-one,2,3-dihydro-3-[(2-methoxyphenyl)methylene]-, (Z)- (9CI)
• 130688-98-1
• C17H14 O2 S
• 282.3569
• .

• 4H-Imidazo[4,5-c]pyridin-4-one,2-[[6-O-(aminocarbonyl)-2-deoxy-2-[methyl[(methylamino)acetyl]amino]-b-D-gulopyranosyl]amino]-1,3a,5,6,7,7a-hexahydro-7-hydroxy-,(3aS,7R,7aS)- (9CI)
• 113402-06-5
• C17H29 N7 O8
• .

• 4-Thiazolidinone,5-[(4-fluorophenyl)methylene]-3-(1-piperidinylmethyl)-2-thioxo-
• 107240-13-1
• C16H17 F N2 O S2
• 336.4474
• .

• 4H-Cyclobuta[i]chrysene,3-ethyl-2a,3,5,5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13-hexadecahydro-11a-methyl-,(3S,5aS,5bR,11aS,11bS,13aS)-
• 102616-46-6
• C23H36
• .

• 4-Benzofuranacetamide,N-methyl-N-[(5R,7S,8S)-7-(1-pyrrolidinyl)-1-oxaspiro[4.5]dec-8-yl]-, rel-
• 124378-74-1
• C24H32 N2 O3
• .

• 4(3H)-Pyrimidinone,2-[[1-[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]-4-piperidinyl]methylamino]-6-propyl-
• 108612-61-9
• C27H31 F N6 O
• 474.573
• .

• 4,6(1H,5H)-Pyrimidinedione,dihydro-5-[(4-hydroxy-3-methoxyphenyl)methylene]-1-[[2-oxo-2-(10H-phenothiazin-10-yl)ethyl]amino]-3-phenyl-2-thioxo-
• 141177-59-5
• C32H24 N4 O5 S2
• 608.6868
• .

• 4H-1-Benzopyran-4-one,3-[[O-6-deoxy-3-O-[(2E)-3-(4-hydroxyphenyl)-1-oxo-2-propenyl]-a-L-mannopyranosyl-(1®3)-O-6-deoxy-a-L-mannopyranosyl-(1®6)-b-D-galactopyranosyl]oxy]-2-(3,4-dihydroxyphenyl)-5-hydroxy-7-methoxy-(9CI)
• 159935-07-6
• C43H48 O22
• .

• 4-Thiazolidinecarboxylicacid, 2-[4,5-dihydro-2-(2-hydroxyphenyl)-4-thiazolyl]-3,4-dimethyl- (9CI)
• 124509-83-7
• C15H18 N2 O3 S2
• 338.445
• .

• 4-Piperidinol,4-phenyl-1-propyl-, 4-propanoate, hydrochloride (1:1)
• 101866-70-0
• C17H25 N O2 . Cl H
• 311.8468
• .

• 4-Pyridinecarboxaldehyde,3-hydroxy-5-(hydroxymethyl)-
• 15031-18-2
• C7H7 N O3
• .

• 4H-1-Benzopyran-4-one,7-[[6-O-(4-carboxy-3-hydroxy-3-methyl-1-oxobutyl)-b-D-glucopyranosyl]oxy]-5-hydroxy-2-(4-hydroxy-3-methoxyphenyl)-6,8-dimethoxy-(9CI)
• 101339-35-9
• C30H34 O17
• .

• 4-Heptanone,3,5-dimethyl-
• 19549-84-9
• C₉H₁₈O
• 243-150-4
• 142.24
• .

• 4H-1-Benzopyran-4-one,2,3-dihydro-5,7-dihydroxy-2-[3-hydroxy-4-methoxy-2,5-bis(3-methyl-2-buten-1-yl)phenyl]-
• 130756-22-8
• C26H30 O6
• 438.5128
• .

• 4H-[1,2,4]Triazino[3,4-a]phthalazin-4-one,3-methyl-7-(1-pyrrolidinyl)-
• 126650-79-1
• C15H15 N5 O
• 281.3125
• .

• 4-Pyridinecarboxylicacid, 2-[3-(butylamino)-3-oxopropyl]hydrazide
• 13012-73-2
• C13H20 N4 O2
• 264.3235
• .

• 4-Pyridinecarboxamide,N,N'-[[tetrahydro-5,6-dihydroxy-2-oxo-4,7-bis(phenylmethyl)-1H-1,3-diazepine-1,3(2H)-diyl]di-5,1-pentanediyl]bis-,[4R-(4a,5a,6b,7b)]- (9CI)
• 167826-38-2
• C41H50 N6 O5
• 706.8729
• .

• 4-Pyrimidinecarboxaldehyde,1,2,3,6-tetrahydro-2,6-dioxo-, 4-(2-phenylhydrazone)
• 14304-71-3
• C11H10 N4 O2
• 230.2227
• .

• 4H-Imidazo[4,5-c][1,8]naphthyridin-4-one,5-butyl-1,5-dihydro-1-methyl-
• 139482-11-4
• C14H16 N4 O
• 0
• .

• 4-Morpholineacetamide,N-(6,11-dihydrodibenzo[b,e]thiepin-11-yl)-, hydrochloride (1:1)
• 117125-47-0
• C20H22 N2 O2 S . Cl H
• 390.9268
• .

• 4H-1-Benzopyran-4-one,6-[(2E)-3,7-dimethyl-2,6-octadien-1-yl]-2,3-dihydro-5,7-dihydroxy-2-(2,4,6-trihydroxyphenyl)-,(2S)-
• 121927-93-3
• C25H28 O7
• .

• 4,16-Dioxatricyclo[11.2.1.13,6]heptadec-6-ene-5,11,14-trione,17-hydroxy-1-methyl-9-(1-methylethenyl)-, (1R,3S,6Z,9R,13R,17R)- (9CI)
• 153379-85-2
• C19H24 O6
• 348.3903
• .

• 4-Morpholineacetamide,N-[2-[(2-benzoyl-4-chlorophenyl)amino]-2-oxoethyl]-
• 101398-18-9
• C21H22 Cl N3 O4
• 415.8701
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 3,3-dimethyl-7-oxo-6-[(1-oxo-2-phenoxybutyl)amino]-, [2S-(2a,5a,6b)]-, compd. with N-(phenylmethyl)benzenemethanamine (9CI)
• 102367-60-2
• C18 H22 N2 O5 S
• .

• 4(3H)-Pyrimidinone,2-amino-5-fluoro-6-phenyl-
• 106791-94-0
• C10H8 F N3 O
• 205.1884
• .

• 4(1H)-Pyrimidinethione,2-amino-
• 1193-27-7
• C4H5 N3 S
• 127.1676
• .

• 4-Piperidinecarboxylicacid, 1-methyl-, 2-hydroxy-3-(2-methylphenoxy)propyl ester
• 102395-68-6
• C17H25 N O4
• 307.3847
• .

• 4-Morpholinecarbodithioicacid, 2-oxo-2-[(4,5,6,7-tetrahydro-2-benzothiazolyl)amino]ethyl ester
• 126830-81-7
• C14H19 N3 O2 S3
• 357.5146
• .

• 4-Morpholinebutanenitrile,a-(1-methylpropyl)-a-1-naphthalenyl-
• 1241-65-2
• C22H28 N2 O
• 0
• .

• 4H-1,3,4-Oxadiazine,2-(4-bromophenyl)-4-(2-fluoroethyl)-5,6-dihydro-, hydrochloride (1:1)
• 156979-73-6
• C11H12 Br F N2 O . Cl H
• .

• 4,7-Epoxy-1H-indene-3a,7a-dicarboxylicacid, hexahydro-, (3aa,4a,7a,7aa)- (9CI)
• 127311-85-7
• C11H14 O5
• 226.2259
• .

• 4H-1,2,4-Triazole,3-(ethylthio)-4-methyl-5-phenyl-
• 116850-61-4
• C11H13 N3 S
• 219.306
• .

• 4H-Pyran-4-one,2-[(1R,3R)-3-[3,5-dimethyl-6-(2-methylpropyl)-4-oxo-4H-pyran-2-yl]-1-methyl-2-oxobutyl]-6-ethyl-3,5-dimethyl-,rel-
• 100046-05-7
• C25H34 O5
• .

• 4H-1-Benzopyran-4-one,8-[(diethylamino)methyl]-7-methoxy-3-methyl-2-(phenylmethyl)-, hydrochloride(1:1)
• 138833-29-1
• C23H27 N O3 . Cl H
• 401.9263
• .

• 4(3H)-Pyrimidinone,2-[(1,2-dihydro-5-methyl-3-nitro-2-oxo-4-pyridinyl)thio]-6-methyl-
• 172469-84-0
• C11H10 N4 O4 S
• 294.2865
• .

• 4(3H)-Quinazolinone,3-methyl-2-(phenylamino)-
• 14505-32-9
• C15H13 N3 O
• 251.2832
• .

• 4-Dibenzofuranol,3-[(dimethylamino)methyl]-6,7,8,9-tetrahydro-, hydrochloride (1:1)
• 118638-04-3
• C15H19 N O2 . Cl H
• 281.7778
• .

• 4(3H)-Quinazolinone,6,8-dibromo-2-methyl-3-[[5-(4-methylphenyl)-1,3,4-oxadiazol-2-yl]methyl]-
• 106924-11-2
• C19H14 Br2 N4 O2
• 490.1481
• .

• 4(3H)-Quinazolinone,3-[[[(4-chlorophenyl)azo][3-(furanyl)phenyl]methylene]amino]-2-methyl- (9CI)
• 110516-64-8
• C26H18 Cl N5 O2
• 467.9064
• .

• 4H-1-Benzopyran-4-one,3-methyl-6-(4-morpholinylmethyl)-2-phenyl-, hydrochloride (1:1)
• 16146-83-1
• C21H21 N O3 . Cl H
• 371.8573
• .

• 4-Oxatricyclo[10.3.1.03,5]hexadec-8-ene-16-carboxaldehyde,5,9,12,13-tetramethyl-2-oxo-, (1S,3S,4R,8E,12S,13R,16S)-
• 154512-14-8
• C20H30 O3
• .

• 4,6(1H,5H)-Pyrimidinedione,1-(2,6-dichlorophenyl)-5-[(4-fluorophenyl)methylene]dihydro-3-[4-(4-morpholinyl)phenyl]-2-thioxo-
• 121608-40-0
• C27H20 Cl2 F N3 O3 S
• 556.4354
• .

• 4H-Inden-4-one,6-[4-[[6-deoxy-4-O-(6-deoxy-a-L-mannopyranosyl)-b-D-galactopyranosyl]oxy]-3,7-dimethyl-2,6-octadienyl]octahydro-6-hydroxy-5-(3-hydroxy-2,6-dimethyl-1,5-heptadienyl)-3a,7-dimethyl-(9CI)
• 121541-66-0
• C42H68 O12
• .

• 4-Pyrimidinecarboxylicacid, 2,6-diamino-
• 16490-14-5
• C5H6 N4 O2
• 0
• .

• 4-Thiazolidinone,2-(4-chlorophenyl)-3-[3-(4-hydroxy-4-phenyl-1-piperidinyl)propyl]-
• 182188-90-5
• C23H27 Cl N2 O2 S
• 0
• .

• 4H-Pyran-4-one,2,3-dihydro-6-methyl-2,2-bis(trifluoromethyl)-
• 102129-09-9
• C8H6 F6 O2
• 248.1225
• .