• 4H-1-Benzopyran-4-one,5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-6-methoxy-
• 18085-97-7
• C17H14 O7
• 330.29
• .

• 4-Penten-1-ol,5-[4-(dimethylamino)phenyl]-4-nitro-, 1-acetate
• 19893-72-2
• C15H20 N2 O4
• 292.3303
• .

• 4-Thiazolecarboxylicacid, 2-(4-methylphenyl)-
• 17228-99-8
• C11H9 N O2 S
• 219.26
• .

• 4H-1-Benzopyran-4-one,7-(b-D-glucopyranosyloxy)-3,5-dihydroxy-2-(4-hydroxyphenyl)-
• 16290-07-6
• C21H20 O11
• 448.38
• .

• 4,7,10,12-Tricosatetraene-3,6,9-trione,5,7-dihydroxy-, (4E,7E,10Z,12Z)-
• 124877-90-3
• C23H34 O5
• .

• 4-Nitrobenzenediazonium toluene-4-sulphonate
• 1947-33-7
• C₁₃H₁₁N₃O₅S
• 217-749-6
• 321.30854
• .

• 4(1H)-Quinazolinone,3-(3-chlorophenyl)-2,3-dihydro-2-thioxo-
• 1028-38-2
• C14H9 Cl N2 O S
• 0
• .

• 4(1H)-Pyrimidinone,2,3-dihydro-1-(phenylmethyl)-2-thioxo-
• 1208-14-6
• C11H10 N2 O S
• 218.2749
• .

• 4(3H)-Pyrimidinone,2-[(2,6-dichlorophenyl)methyl]-5-fluoro-
• 143328-96-5
• C11H7 Cl2 F N2 O
• 273.0905
• .

• 4(1H)-Pyrimidinone,6-hydroxy-2-methyl-
• 1194-22-5
• C5H6 N2 O2
• 126.1133
• .

• 4(5H)-Oxazolone,5-acetyl-2-(4-fluorophenyl)-5-methyl-
• 18354-42-2
• C12H10 F N O3
• 235.2111
• .

• 4(3H)-Quinazolinone,6-bromo-3-[5-[[2-hydroxy-3-[(4-methylphenyl)amino]propyl]thio]-1,3,4-thiadiazol-2-yl]-2-methyl-
• 135575-58-5
• C21H20 Br N5 O2 S2
• 518.4498
• .

• 4(1H)-Pyrimidinone,6-chloro-2,5-dimethyl-
• 1194-73-6
• C6H7 Cl N2 O
• 0
• .

• 4-Piperidinone,1-(2-ethoxyethyl)-3-methyl-, hydrochloride (1:1)
• 109629-31-4
• C10H19 N O2 . Cl H
• 221.7243
• .

• 4H-1-Benzopyran-4-one,7-hydroxy-3-methyl-2-phenyl-
• 18651-15-5
• C16H12 O3
• 252.26
• .

• 4H-1-Benzopyran-4-one,5,7-dihydroxy-2-(hydroxymethyl)-6-[(2Z)-4-hydroxy-3-methyl-2-buten-1-yl]-
• 144050-03-3
• C15H16 O6
• .

• 4H-1-Benzopyran-4-one,3-chloro-6-methyl-2-phenyl-
• 13178-99-9
• C16H11 Cl O2
• 270.7103
• .

• 4H-Pyrido[1,2-a]pyrimidin-4-one,2-hydroxy-8-methyl-
• 17326-10-2
• C9H8 N2 O2
• 176.172
• .

• 4-Thiazolidinone,3-(4-methyl-9H-xanthen-9-yl)-5-(2-thienylmethylene)-2-thioxo-
• 14281-61-9
• C22H15 N O2 S3
• 421.555
• .

• 4-Quinolinecarboxylicacid, 6-fluoro-2-(4-methylphenyl)-
• 18060-42-9
• C17H12 F N O2
• 281.2811
• .

• 4-Thiazolidinone,5-[(4-hydroxyphenyl)methylene]-3-phenyl-2-thioxo-
• 13037-57-5
• C16H11 N O2 S2
• 313.394
• .

• 4-Pyrimidinecarboxamide,2,6-diamino-5-nitro-
• 19796-69-1
• C5H6 N6 O3
• 198.1395
• .

• 4-Morpholineethanamine,N-[4-[(4-chlorophenyl)methyl]-6-phenyl-3-pyridazinyl]-, hydrochloride (1:2)
• 118269-82-2
• C23H25 Cl N4 O . 2 Cl H
• 481.8457
• .

• 4-Pyridinecarboxylicacid, 2-(1H-pyrrol-2-ylmethylene)hydrazide
• 10344-21-5
• C11H10 N4 O
• 214.2233
• .

• 4-Thiazoleacetic acid,2-[(2-chloroacetyl)amino]-, ethyl ester
• 19749-93-0
• C9H11 Cl N2 O3 S
• 262.71
• .

• 4H-Pyrazino[3,2,1-jk]carbazole,10-chloro-5,6-dihydro-, hydrochloride (1:1)
• 102129-10-2
• C14H11 Cl N2 . Cl H
• 279.1645
• .

• 4,8,12,16,20-Pentaazatricosane-1,23-diamine
• 100009-88-9
• C18H45 N7
• .

• 4-Quinolinecarboxylicacid, 2-[2-(aminothioxomethyl)hydrazinyl]-
• 100857-78-1
• C11H10 N4 O2 S
• 262.2877
• .

• 4(3H)-Pyrimidinone,5-[(2-hydroxy-1-naphthalenyl)methyl]-2-methyl-6-phenyl-
• 14018-01-0
• C22H18 N2 O2
• 342.3905
• .

• 4H-1-Benzopyran-4-one,2-(3,4-dihydroxyphenyl)-5-hydroxy-
• 19852-25-6
• C15H10 O5
• 270.24
• .

• 4(1H)-Quinazolinone,2,3-dihydro-3-(3-hydroxypropyl)-2-thioxo-
• 16024-87-6
• C11H12 N2 O2 S
• 0
• .

• 4H-Naphtho[2,3-b]pyran-4-one,10-[5-[2,5-dihydro-4-[(4-hydroxyphenyl)methyl]-2-oxo-3-furanyl]-2-hydroxyphenyl]-5-hydroxy-6,8-dimethoxy-2-methyl-
• 177912-47-9
• C33H26 O9
• .

• 4-Hexyn-3-ol,6-(diethylamino)-3-methyl-
• 19764-53-5
• C11H21 N O
• 183.2905
• .

• 4,8,12-Tetradecatrienoicacid, 5,9,13-trimethyl-, 3,7-dimethyl-2,6-octadien-1-yl ester
• 16898-88-7
• C27H44 O2
• 240-942-1
• 400.6371
• .

• 4-Piperidinecarboxylicacid, 1-(2-pyridinylmethyl)-, ethyl ester
• 138030-53-2
• C14H20 N2 O2
• 安全数据
• 248.32
• .

• 4H-1,3-Benzodioxin,6,8-dinitro-
• 16607-27-5
• C8H6 N2 O6
• 226.143
• .

• 4-Thiazolecarboxylicacid,2-[(11S,18S,28S)-10,11,17,18,23,24,25,26,27,28-decahydro-14-methyl-11-[2-(methylamino)-2-oxoethyl]-18,28-bis(1-methylethyl)-9,16,23,26-tetraoxo-9H,16H-8,5:15,12:22,19:32,29:36,33-pentanitrilo-5H,29H,33H-pyrido[3,2-a1][1,11,18,25,31,4,7,14,21]pentathiatetraazacyclotetratriacontin-2-yl]-,methyl ester
• 156620-46-1
• C43H42 N12 O7 S6
• 0
• .

• 4H-1,2,4-Triazole,3-[(4-methylphenoxy)methyl]-4,5-bis(4-methylphenyl)-
• 141078-99-1
• C24H23 N3 O
• 369.4589
• .

• 4,8-Dodecadienoic acid,3,7,11-trimethyl-2,6-bis(phenylmethoxy)-, methyl ester,(2R,3S,4E,6R,7S,8E)-rel-
• 102616-15-9
• C30H40 O4
• 464.6362
• .

• 4H-1-Benzopyran-4-one,2-(ethylamino)-7-methoxy-
• 103676-93-3
• C12H13 N O3
• 219.2365
• .

• 4,6(1H,5H)-Pyrimidinedione,dihydro-5-(1-methylbutyl)-5-[2-(1-piperidinyl)ethyl]-2-thioxo-, hydrochloride(1:1)
• 1158-53-8
• C16H27 N3 O2 S . Cl H
• 361.9304
• .

• 4,5-Pentadecadien-2-one,6,10,14-trimethyl-
• 16647-10-2
• C18H32 O
• 240-693-9
• 264.44608
• .

• 4-Penten-1-ol,4-nitro-5-(9-phenanthrenyl)-, 1-benzoate
• 19893-76-6
• C26H21 N O4
• 411.4492
• .

• 4H-1,3-Benzoxazin-4-one,6-amino-2-(1-chloro-1-methylethyl)-2,3-dihydro-, hydrochloride (1:1)
• 12679-71-9
• C11H13 Cl N2 O2 . Cl H
• .

• 4H-1-Benzopyran-4-one,3-(3,4-dihydroxyphenyl)-7-[(2-O-b-D-glucopyranosyl-b-D-glucopyranosyl)oxy]-5-hydroxy-
• 101072-83-7
• C27H30 O16
• .

• 4-Quinolinol,4-ethynyldecahydro-1,2-dimethyl-, (2R,4R,4aS,8aS)-rel-
• 14788-65-9
• C13H21 N O
• 0
• .

• 4H-Pyrimido[6,1-a]isoquinolin-4-one,6,7-dihydro-9,10-dimethoxy-7,7-dimethyl-2-[(2,4,6-trimethylphenyl)amino]-,hydrochloride (1:1)
• 108445-45-0
• C25H29 N3 O3 . Cl H
• 455.977
• .

• 4-Morpholineacetamide,N-[3-(trifluoromethyl)phenyl]-
• 1828-48-4
• C13H15 F3 N2 O2
• 288.2656
• .

• 4-Hexen-3-ol,4,5-dichloro-6-(dimethylamino)-3-methyl-
• 100156-17-0
• C9H17 Cl2 N O
• 226.1434
• .

• 4H-1-Benzopyran-4-one,3-[[2-O-(6-deoxy-a-L-mannopyranosyl)-a-L-arabinofuranosyl]oxy]-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-
• 188837-51-6
• C26H28 O15
• 580.49152
• .