• 4(1H)-Pyrimidinone, 5-amino-6-chloro-
• 3137-60-8
• C4H4 Cl N3 O
• 145.54706
• .

• 4-Phenanthrenol,3-[(diethylamino)methyl]-1,2,3,4-tetrahydro-,hydrochloride (1:1)
• 7470-61-3
• C19H25 N O . Cl H
• 283.4079
• .

• 4-Quinolinecarboxylicacid, 2-hexyl-, 2-[(3-nitrophenyl)methylene]hydrazide
• 7466-66-2
• C23H24 N4 O3
• 404.4617
• .

• 4-Thiazolidinecarboxylicacid, ethyl ester
• 51977-21-0
• C₆H₁₁NO₂S
• 257-567-4
• 161.222
• .

• 4H-Dibenzo[de,g]quinoline,5,6-dihydro-1,2,10-trimethoxy-6-methyl-
• 70403-80-4
• C20H21 N O3
• 323.3856
• .

• 4-Pyridinamine,N-methyl-N-nitroso-, 1-oxide
• 82308-48-3
• C6H7 N3 O2
• 153.1387
• .

• 4-Quinolinecarboxylicacid, 2-(2-pyridinyl)-, ethyl ester
• 5110-06-5
• C17H14 N2 O2
• 278.3053
• .

• 4,7-Methano-2H-indene,4,7-dihydro-
• 6675-71-4
• C10H10
• 130.1864
• .

• 4-Pyrimidinecarboxylicacid, 1,2,3,6-tetrahydro-2,6-dioxo-, iron(2+) salt (2:1)
• 94333-36-5
• C5H4 N2 O4 . 1/2 Fe
• 305-013-8
• 366.0216
• .

• 4,17-Dioxabicyclo[14.1.0]heptadeca-6-ene-5,13-dione,2-[[(6-deoxy-2,3-di-O-methyl-b-D-allopyranosyl)oxy]methyl]-9-[[(4S,5R,6R,7S,9R)-6-hydroxy-4,9-dimethyl-2-oxo-1,3,8-trioxaspiro[4.5]dec-7-yl]oxy]-3,8,10,12-tetramethyl-,(1S,2R,3R,6E,8S,9S,10S,12R,16S)-
• 11011-06-6
• C37H58 O15
• .

• 4-Thiazolecarbonitrile,5-amino-2-(methylthio)-
• 73109-38-3
• C5H5 N3 S2
• 171.2433
• .

• 4-Cyclohexene-1,2-dicarboxylicacid, dimethyl ester, trans- (8CI,9CI)
• 17673-68-6
• C10H14 O4
• 0
• .

• 4(3H)-Pteridinone,2-amino-7,8-dihydro-6-methyl-, hydrochloride (1:1)
• 16280-50-5
• C7H9 N5 O . Cl H
• 179.1793
• .

• 4H-1,2,3-Triazino[5,4-b]indol-4-one,3,5-dihydro-3-[[(4-phenoxyphenyl)methylene]amino]-
• 139953-79-0
• C22H15 N5 O2
• 381.39
• .

• 4H-1-Benzopyran-4-one,6-[(6-ethyl-4-hydroxy-5-methyl-2-oxo-2H-pyran-3-yl)methyl]-2,3-dihydro-5,7-dihydroxy-2-phenyl-,(2S)-
• 122585-68-6
• C24H22 O7
• .

• 4(1H)-Quinazolinone,7-chloro-2,3-dihydro-3-phenyl-2-thioxo-
• 13165-15-6
• C14H9 Cl N2 O S
• 288.75206
• .

• 4-Pyridinemethanol,5-(bromomethyl)-3-hydroxy-2-methyl-, hydrobromide (1:1)
• 42529-20-4
• C8H10 Br N O2 . Br H
• 232.0745
• .

• 4H-1,3-Oxazine,2-(5-chloropentyl)-5,6-dihydro-4,4,6-trimethyl-
• 36871-49-5
• C12H22 Cl N O
• 231.7622
• .

• 4-Quinolinecarboxaldehyde,oxime
• 39977-74-7
• C10H8 N2 O
• 172.1833
• .

• 4H-1-Benzopyran-4-one,3-benzoyl-2-phenyl-
• 5453-03-2
• C22H14 O3
• 326.3448
• .

• 4,7-Methano-1H-isoindole-1,3(2H)-dione,3a,4,7,7a-tetrahydro-5-[(R)-hydroxyphenyl-2-pyridinylmethyl]-8-(phenyl-2-pyridinylmethylene)-,(3aR,4R,7S,7aS,8E)-rel-
• 5784-51-0
• C33H25 N3 O3
• 216.2789
• .

• 4H-3,1-Benzothiazin-2-amine
• 78959-46-3
• C8H8 N2 S
• 164.2275
• .

• 4(3H)-Pyrimidinone, 2-amino-5-(trimethylsilyl)-
• 59523-08-9
• C7H13 N3 O Si
• 183.2831
• .

• 4-Morpholineethanol,a-phenyl-b-(phenylmethyl)-, hydrochloride (1:1)
• 6275-16-7
• C19H23 N O2 . Cl H
• 297.3914
• .

• 4-Thiazolidinone,5-[(4-fluorophenyl)methylene]-3-[[[4-(1-piperidinylcarbonyl)phenyl]amino]methyl]-2-thioxo-
• 104183-61-1
• C23H22 F N3 O2 S2
• 439.55044
• .

• 4H-1-Benzothiopyran-4-one,2,3-dihydro-, O-[(4-methylphenyl)sulfonyl]oxime
• 14106-16-2
• C16H15 N O3 S2
• 333.4252
• .

• 4H-1-Benzothiopyran-4-one,3-(chloromethyl)-8-methyl-2-phenyl-
• 93367-34-1
• C17H13 Cl O S
• 300.8025
• .

• 4(3H)-Quinazolinone, 3-[4,5-dihydro-2-methyl-5-oxo-4-(phenylmethylene)-1H-imidazol-1-yl]-2-ethyl-
• 114496-26-3
• C21H18 N4 O2
• 358.3932
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid,6-[[[3-(2,6-dichlorophenyl)-5-methyl-4-isoxazolyl]carbonyl]amino]-3,3-dimethyl-7-oxo-,2-(diethylamino)ethyl ester, (2S,5R,6R)-
• 63346-80-5
• C25H30 Cl2 N4 O5 S
• .

• 4-Pyridinemethanol,1-oxide
• 22346-75-4
• C6H7 N O2
• 244-926-5
• 125.13
• .

• 4-Pyridinamine,N-4-pyridinyl-
• 1915-42-0
• C10H9 N3
• 171.2
• .

• 4-Pyridinecarboxylicacid, 2-phenyl-, hydrazide
• 58481-06-4
• C₁₂H₁₁N₃O
• 0
• .

• 4H-Imidazo[4,5-d]-1,2,3-triazin-4-one,7-b-D-arabinofuranosyl-1,7-dihydro- (9CI)
• 56220-51-0
• C9H11 N5 O5
• 269.2141
• .

• 4a,8a-(Methaniminomethano)naphthalen-2-ol,octahydro-10-methyl-, benzoate (ester), hydrochloride, (2a,4ab,8ab)- (9CI)
• 17747-52-3
• C20H27 N O2 . Cl H
• 349.8948
• .

• 4-Thiazolidinone,5-[(2,5-dimethoxyphenyl)methylene]-3-(2,3,4,6-tetra-O-acetyl-b-D-glucopyranosyl)-2-thioxo-
• 65562-24-5
• C26H29 N O12 S2
• 611.638
• .

• 4-Thiazoleaceticacid, 2,3-dihydro-3-(phenylmethyl)-2-thioxo-, ethyl ester
• 84645-47-6
• C14H15 N O2 S2
• 293.4044
• .

• 4,7-Methano-1H-inden-2-ol,octahydro-2-(4-methoxybutyl)-
• 94231-46-6
• C15H26 O2
• 303-863-4
• 238.36574
• .

• 4-Oxazolidineacetonitrile,2,5-dioxo-
• 23640-02-0
• C5H4 N2 O3
• .

• 4H-1-Benzothiopyran-4-one,5-(chloromethyl)-6-methoxy-2-phenyl-
• 93367-30-7
• C17H13 Cl O2 S
• 316.8019
• .

• 4-acetyl-N-octadecyl-benzamide
• 94086-69-8
• C₂₇H₄₅NO₂
• 301-858-1
• 415.6517
• .

• 4(1H)-Pyrimidinone,6-amino-2,3-dihydro-5-(2-hydroxyethyl)-2-thioxo-
• 89598-68-5
• C6H9 N3 O2 S
• 187.2196
• .

• 4-Pyridinecarboxylicacid,5-[2-[4-[7-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-5,9-disulfo-2H-naphtho[1,2-d]triazol-2-yl]-2-sulfophenyl]diazenyl]-1,2-dihydro-6-hydroxy-2-oxo-
• 89182-94-5
• C26H14 Cl F2 N9 O13 S3
• 0
• .

• 4(3H)-Pyrimidinone, 6-methyl-5-[(methylnitrosoamino)methyl]-2-(1-piperidinyl)-
• 93002-45-0
• C12H19 N5 O2
• 265.3116
• .

• 4,7-Ethenobenzo[c]thiophene,1,3,3a,4,5,6,7,7a-octahydro-, 2,2-dioxide, (3aR,4S,7R,7aS)-rel-
• 92688-78-3
• C10H14 O2 S
• 0
• .

• 4-Thiazoleaceticacid, 2-phenyl-
• 16441-28-4
• C11H9 N O2 S
• 219.26
• .

• 4H-1-Benzopyran-4-one,7-[(2-O-D-apio-b-D-furanosyl-b-D-glucopyranosyl)oxy]-5-hydroxy-6-methoxy-3-(4-methoxyphenyl)-(9CI)
• 194149-95-6
• C28H32 O15
• .

• 4-Thiazolidinone,3-phenyl-5-(4-pyridinylmethylene)-2-thioxo-
• 92427-61-7
• C15H10 N2 O S2
• 298.3827
• .

• 4H-1-Benzopyran-4-one,7-methoxy-3-(2,3,4-trimethoxyphenyl)-
• 5065-06-5
• C19H18 O6
• 342.3426
• .

• 4,7-Methanoinden-8-one,4,5,6,7-tetrachloro-3a,4,7,7a-tetrahydro-, bis(4-hydroxybutyl) acetal,diacetate (8CI)
• 4064-14-6
• C22H28 Cl4 O6
• 339.4314
• .

• 4-Pyridinecarboxylicacid, 2-amino-6-chloro-, ethyl ester
• 28056-05-5
• C8H9 Cl N2 O2
• 200.6223
• .