• 4-Pyrimidinamine,2-[[(2,4-dichlorophenyl)methyl]thio]-N,N,6-trimethyl-, hydrochloride (1:1)
• 6342-23-0
• C14H15 Cl2 N3 S . Cl H
• 328.26
• .

• 4(3H)-Pyrimidinone,6-amino-5-bromo-
• 6312-71-6
• C4H4 Br N3 O
• 190
• .

• 4-Morpholinecarboxylicacid, 1,2-ethanediyl ester (9CI)
• 6298-82-4
• C12H20 N2 O6
• 0
• .

• 4,5-Pyrimidinediamine,6-chloro-N4,2-diethyl-
• 6237-98-5
• C8H13 Cl N4
• 200.6686
• .

• 4-Pyridineethanamine, N, N-diethyl-
• 67580-61-4
• C₁₁H₁₈N₂
• 178.274
• .

• 4-Quinazolinamine,6-bromo-2-[5-bromo-2-[2-(3-methyl-1-piperidinyl)diazenyl]phenyl]-
• 62888-11-3
• C20H20 Br2 N6
• 504.221
• .

• 4(3H)-Quinazolinone,3-methyl-6-nitro-7-[(phenylmethyl)amino]-
• 66234-57-9
• C16H14 N4 O3
• 310.3074
• .

• 4-Pyridineethanamine,N-hydroxy-N-[2-(4-pyridinyl)ethyl]-
• 6965-68-0
• C14H17 N3 O
• 243.3043
• .

• 4-Pyridinecarboxylicacid, 6-amino-1,2-dihydro-2-oxo-
• 6313-53-7
• C6H6 N2 O3
• 154.1234
• .

• 4-Morpholinesulfonamide,N-[[(8b)-9,10-didehydro-6-methylergolin-8-yl]methyl]-(9CI)
• 67658-65-5
• C20H26 N4 O3 S
• 402.5104
• .

• 4-Pyridinamine,3-(2-phenylethyl)-
• 6635-94-5
• C₁₃H₁₄N₂
• 198.2637
• .

• 4H-1-Benzothiopyran-4-one,2,3-dihydro-6-methyl-2-phenyl-
• 6948-60-3
• C16H14 O S
• 254.3468
• .

• 4(3H)-Pyrimidinone,5-[(3,4-dimethylphenyl)amino]-6-hydroxy-2-(methylthio)-
• 6972-20-9
• C13H15 N3 O2 S
• 277.3421
• .

• 4H-1-Benzopyran-4-one,2-(3,4-dihydroxyphenyl)-6-(b-D-glucopyranosyloxy)-5-hydroxy-3,7-dimethoxy-
• 64190-90-5
• C23H24 O13
• 508.4289
• .

• 4-Piperidinol,4-(1-isoquinolinyl)-1-(phenylmethyl)-, 4-benzoate
• 62370-80-3
• C28H26 N2 O2
• 422.5182
• .

• 4H-Thiopyran-4-one,2,6-dimercapto-, 3,5-di-C3-6-alkyl derivs.
• 68784-81-6
• .

• 4-Pyridineethanethiol,1-oxide
• 69603-81-2
• C7H9 N O S
• 155.2175
• .

• 4-Thiazolecarboxylicacid, 2-[5-[(benzoyloxy)methyl]-2-furanyl]-, ethyl ester
• 60084-12-0
• C18H15 N O5 S
• 357.3804
• .

• 4H-1,2,4-Triazol-4-amine,N,N'-(1,4-phenylenedimethylidyne)bis- (9CI)
• 61296-24-0
• C12H10 N8
• 266.2614
• .

• 4-Pyridazinamine,3-methoxy-6-methyl-N-nitro-
• 6970-09-8
• C6H8 N4 O3
• 185.1601
• .

• 4-Heptynoic acid,2-cyano-3-methyl-, ethyl ester
• 61791-94-4
• C11H15 N O2
• 263-209-8
• 193.2423
• .

• 4(3H)-Quinazolinone,3-[3-[[bis(2-chloroethyl)amino]methyl]-4-ethoxyphenyl]-
• 69561-29-1
• C21H23 Cl2 N3 O2
• 420.3322
• .

• 4(1H)-Pyrimidinone,2-amino-6-(ethylthio)-
• 6307-39-7
• C6H9 N3 O S
• 171.2202
• .

• 4(3H)-Pyrimidinone,2-amino-6-[(4-bromophenyl)amino]-5-nitroso-
• 6939-50-0
• C10H8 Br N5 O2
• 310.1068
• .

• 4-Thiazolidinone,5-[1-(2-pyridinyl)ethylidene]-3-(2,3,4,6-tetra-O-acetyl-b-D-glucopyranosyl)-2-thioxo-
• 65562-36-9
• C24H26 N2 O10 S2
• 566.6006
• .

• 4-Isobenzofurancarboxylicacid, 1,3-dihydro-5,7-dimethoxy-6-methyl-1-oxo-, methyl ester
• 62512-04-3
• C13H14 O6
• 0
• .

• 4(3H)-Pyrimidinethione,2-(4-morpholinyl)-5-phenyl-
• 69909-06-4
• C14H15 N3 O S
• 273.3534
• .

• 4H-Pyrazole,4-chloro-4-methyl-3,5-diphenyl-, 1,2-dioxide
• 61355-03-1
• C16H13 Cl N2 O2
• 300.7396
• .

• 4-Morpholineethanol, a-(diphenylmethyl)-, hydrochloride(1:1)
• 6935-62-2
• C19H23 N O2 . Cl H
• 297.3914
• .

• 4-Quinolinecarboxylicacid, 6,8-dichloro-2-(3-pyridinyl)-
• 67059-24-9
• C15H8 Cl2 N2 O2
• 319.1422
• .

• 4(1H)-Pyrimidinone,6-amino-2,3-dihydro-5-[[(4-methoxyphenyl)methylene]amino]-2-thioxo-
• 64232-86-6
• C12H12 N4 O2 S
• 276.3143
• .

• 4,11,13,15,22-Pentaazapentacosanedioicacid,2,24-diacetyl-13-[6-[[2-(ethoxycarbonyl)-1,3-dioxobutyl]amino]hexyl]-3,12,14,23-tetraoxo-,1,25-diethyl ester
• 64762-96-5
• C41H68 N6 O14
• 265-231-3
• 869.01042
• .

• 4(3H)-Pyrimidinethione,5-chloro-6-mercapto-
• 6303-51-1
• C4H3 Cl N2 S2
• 178.663
• .

• 4H-1,3,4-Oxadiazine,2-(3,4-dichlorophenyl)-5,6-dihydro-
• 6562-66-9
• C9H8 Cl2 N2 O
• 231.0786
• .

• 4(3H)-Pyrimidinone,2,6-diamino-5-[2-(2,6-dimethylphenyl)diazenyl]-
• 6979-63-1
• C12H14 N6 O
• 258.2792
• .

• 4,6-Pyrimidinedicarboxylicacid, 4,6-dimethyl ester
• 6345-43-3
• C₈H₈N₂O₄
• 196.16
• .

• 4H-1-Benzopyran-4-one,3-ethyl-8-[(ethylamino)methyl]-7-hydroxy-2-phenyl-, hydrochloride (9CI)
• 67238-77-1
• C20H21 N O3 . Cl H
• 359.8466
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid,6-[[[[[2-(4-acetyl-1-piperazinyl)-1,5-dihydro-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)
• 65912-84-7
• C30H32 N8 O8 S
• 664.6889
• .

• 4(1H)-Quinazolinone,3-(2-chlorophenyl)-2,3-dihydro-2-thioxo-
• 65141-60-8
• C₁₄H₉ClN₂OS
• 0
• .

• 4-Piperidinecarboxylicacid, 1-acetyl-, ethyl ester
• 69001-10-1
• C10H17 N O3
• 273-678-0
• 199.24688
• .

• 4,6(1H,5H)-Pyrimidinedione,5-butyldihydro-5-(2-methyl-2-propen-1-yl)-2-thioxo-
• 67050-43-5
• C12H18 N2 O2 S
• 254.3485
• .

• 4H-1,3-Benzodioxin,6-nitro-
• 6963-03-7
• C8H7 N O4
• 181.1455
• .

• 4-Thiazoleacetic acid,2-amino-a-(hydroxyimino)-, ethyl ester
• 60845-81-0
• C7H9 N3 O3 S
• 262-468-4
• 215.23
• .

• 4H-Cyclopenta[c]phosphorin-4-one,1,2,3,5,6,7-hexahydro-2-hydroxy-, 2-oxide
• 65489-15-8
• C8H11 O3 P
• 186.1449
• .

• 4H-Pyrazolo[3,4-d]pyridazin-4-one,7-(2-buten-1-yl)-1,5-dihydro-3-methyl-
• 63195-19-7
• C10H12 N4 O
• 204.2285
• .

• 4(3H)-Pyrimidinone,2-[[2-[[(4-methyl-1H-imidazol-5-yl)methyl]thio]ethyl]amino]-5-(2-thiazolylmethyl)-,hydrochloride (1:3)
• 64107-58-0
• C15H18 N6 O S2 . 3 Cl H
• 471.8558
• .

• 4(1H)-Pyrimidinone,6-hydroxy-2-(trifluoromethyl)-
• 672-47-9
• C₅H₃F₃N₂O₂
• 180.08
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 6-[[3-(4-butoxyphenyl)-3-carboxy-1-oxopropyl]amino]-3,3-dimethyl-7-oxo-,[2S-(2a,5a,6b)]- (9CI)
• 60947-81-1
• C22H28 N2 O7 S
• 464.5319
• .

• 4(3H)-Pyrimidinethione,3-methyl-
• 6146-25-4
• C5H6 N2 S
• 126.1795
• .

• 4(3H)-Pyrimidinethione, 2-amino-6-mercapto-5-phenyl-
• 6299-75-8
• C10H9 N3 S2
• 235.3286
• .