• 5-(morpholin-4-ylcarbonyl)-3-phenyldihydrofuran-2(3H)-one (non-preferred name)
• 42013-30-9
• C₁₅H₁₇NO₄
• 275.2998
• .

• 5-(3,4,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indol-2(1H)-yl)-1-phenylpentan-1-one
• 42021-38-5
• C₂₅H₂₉N₃O
• 387.5173
• .

• 5-phenyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione
• 42039-84-9
• C₁₀H₈N₂O₂S
• 220.2477
• .

• 5,5-dimethyl-3-[3-(trifluoromethyl)phenyl]imidazolidine-2,4-dione
• 70842-06-7
• C₁₂H₁₁F₃N₂O₂
• 272.2231
• .

• 5-bromo-N-[2-(2,6-dimethylphenoxy)ethyl]-N-ethylpentan-1-amine ethanedioate
• 42055-00-5
• C₁₉H₃₀BrNO₅
• 432.3492
• .

• 5,17-Docosadiene, (5Z,17Z)-
• 168298-59-7
• C₂₂H₄₂
• .

• 5-Quinolinol, 8-fluoro-2-methyl-
• 420786-80-7
• C₁₀H₈FNO
• .

• 5-Quinolinol, 7-chloro-2-methyl-
• 420786-81-8
• C₁₀H₈ClNO
• .

• 5,6-dimethyl-1-(1-methylethyl)-4,7-diphenyl-1,6-dihydro-2H-pyrrolo[3,4-d]pyrimidin-2-one
• 70886-89-4
• C₂₃H₂₃N₃O
• 357.4482
• .

• 5(4H)-Oxazolone, 4-(1H-indol-3-ylmethylene)-2-phenyl-
• 42136-84-5
• C₁₈H₁₂N₂O₂
• .

• 5-hydroxycyclopent-2-en-1-one
• 70919-26-5
• C₅H₆O₂
• 98.0999
• .

• 5-(2,6-dichlorobenzyl)-1,2,4-oxadiazol-3-amine
• 70925-95-0
• C₉H₇Cl₂N₃O
• 244.0774
• .

• 5-chloro-8-methoxy-2-methylquinolin-4(1H)-one
• 421568-47-0
• C₁₁H₁₀ClNO₂
• 223.6556
• .

• 5,7-dihydroxy-3-(2-hydroxyphenyl)-4H-chromen-4-one
• 70943-68-9
• C₁₅H₁₀O₅
• 270.2369
• .

• 5,6,6a,6b,7,8,12b,12c-octahydrodibenzo[a,i]biphenylene
• 42182-84-3
• C₂₀H₂₀
• 260.3728
• .

• 5H-Inden-5-one, octahydro-1-hydroxy-7a-methyl-
• 42199-04-2
• C₁₀H₁₆O₂
• .

• 5,5-diethyl-1,3-bis(2-morpholin-4-yl-2-oxoethyl)pyrimidine-2,4,6(1H,3H,5H)-trione
• 70959-48-7
• C₂₀H₃₀N₄O₇
• 438.4748
• .

• 5-Pyrimidinecarboxylic acid, 4-[(oxidophenylimino)methyl]-2-phenyl-,ethyl ester
• 70969-94-7
• C₂₀H₁₇N₃O₃
• .

• 5,5-dimethyl-3-(4-nitrophenyl)imidazolidine-2,4-dione
• 70974-09-3
• C₁₁H₁₁N₃O₄
• 249.2227
• .

• 5,5-dimethyl-3-[4-(trifluoromethyl)phenyl]imidazolidine-2,4-dione
• 70974-21-9
• C₁₂H₁₁F₃N₂O₂
• 272.2231
• .

• 5-bromo-3-hydroxy-2-methyl-4H-pyran-4-one
• 71001-54-2
• C₆H₅BrO₃
• 205.0061
• .

• 5-bromo-3-methoxy-9-oxo-6,7,8,9-tetrahydro-5H-benzo[7]annulen-2-yl acetate
• 71007-45-9
• C₁₄H₁₅BrO₄
• 327.1705
• .

• 5H-Benzocyclohepten-5-one, 3-(acetyloxy)-2-methoxy-
• 71007-56-2
• C₁₄H₁₂O₄
• .

• 5H-Benzocyclohepten-5-one, 3-hydroxy-2-methoxy-
• 71007-57-3
• C₁₂H₁₀O₃
• .

• 5-chloro-1-methyl-3-pyridin-2-yl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one
• 71008-58-7
• C₁₂H₉ClN₄O
• 260.6791
• .

• 5-Quinolinecarboxylic acid, pentafluorophenyl ester
• 168899-45-4
• C₁₆H₆F₅NO₂
• .

• 5H-Pyrrolo[3,4-b]pyridine-5,7(6H)-dione, 6-(1,1-dimethylethyl)-3-nitro-
• 168901-31-3
• C₁₁H₁₁N₃O₄
• .

• 5-chloro-2-{[10-(1,3-thiazolidin-3-yl)decyl]sulfanyl}pyridine dihydrochloride
• 42258-26-4
• C₁₈H₃₁Cl₃N₂S₂
• 445.9411
• .

• 5-[(4-methylphenyl)sulfanyl]quinazoline-2,4-diamine
• 168910-32-5
• C₁₅H₁₄N₄S
• 282.3635
• .

• 5-methyl-2H-chromen-2-one
• 42286-84-0
• C₁₀H₈O₂
• 160.1693
• .

• 5-nitro-1-prop-2-yn-1-yl-1H-imidazole
• 42307-14-2
• C₆H₅N₃O₂
• 151.1228
• .

• 5-Pyrimidinol, 2-[(1,1-dimethylethyl)thio]-
• 71057-02-8
• C₈H₁₂N₂OS
• .

• 5,8-dichloro-2-methylquinoline
• 71063-08-6
• C₁₀H₇Cl₂N
• 212.0753
• .

• 5,8-bis{[2-(dimethylamino)ethyl]amino}-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid
• 71065-71-9
• C₂₃H₂₈N₄O₄
• 424.4928
• .

• 5-hydroxy-6,14-dimethyl-3,10-dimethylidene-2-oxohexadecahydro-6,9-epoxycyclotetradeca[b]furan-15-yl acetate
• 169217-44-1
• C₂₂H₃₂O₆
• 392.4859
• .

• 5-Isoxazolol, 4,5-dihydro-3-methyl-5-(phenylmethyl)-
• 158243-59-5
• C₁₁H₁₃NO₂
• .

• 5H-1,3,4-Thiadiazolo[3,2-a]pyrimidin-5-one,2,3-dihydro-7-methyl-2-thioxo-
• 68967-31-7
• C₆H₅N₃OS₂
• .

• 5-[(5-nitro-1,3-thiazol-2-yl)sulfanyl]-1,3,4-thiadiazol-2-amine
• 40045-50-9
• C₅H₃N₅O₂S₃
• 261.3046
• .

• 5(4H)-Oxazolone, 2-phenyl-4-(2-pyrrolidinylidene)-
• 40051-96-5
• C₁₃H₁₂N₂O₂
• .

• 5(4H)-Oxazolone, 4-(hexahydro-2H-azepin-2-ylidene)-2-phenyl-
• 40051-97-6
• C₁₅H₁₆N₂O₂
• .

• 5(4H)-Oxazolone, 4-(1-ethoxyethylidene)-2-phenyl-
• 40052-08-2
• C₁₃H₁₃NO₃
• .

• 5-[(2,5-dichlorophenoxy)methyl]-N-ethyl-1,3,4-oxadiazol-2-amine
• 40056-70-0
• C₁₁H₁₁Cl₂N₃O₂
• 288.1299
• .

• 5-[(2,5-dichlorophenoxy)methyl]-N-(prop-2-en-1-yl)-1,3,4-oxadiazol-2-amine
• 40056-72-2
• C₁₂H₁₁Cl₂N₃O₂
• 300.1406
• .

• 5-[(2,5-dichlorophenoxy)methyl]-N-(2-methylphenyl)-1,3,4-oxadiazol-2-amine
• 40056-77-7
• C₁₆H₁₃Cl₂N₃O₂
• 350.1993
• .

• 5-[(2,5-dichlorophenoxy)methyl]-N-(4-methylphenyl)-1,3,4-oxadiazol-2-amine
• 40056-78-8
• C₁₆H₁₃Cl₂N₃O₂
• 350.1993
• .

• 5-[(2,5-dichlorophenoxy)methyl]-N-(3-methoxyphenyl)-1,3,4-oxadiazol-2-amine
• 40056-79-9
• C₁₆H₁₃Cl₂N₃O₃
• 366.1987
• .

• 5-[(2,5-dichlorophenoxy)methyl]-N-(4-methoxyphenyl)-1,3,4-oxadiazol-2-amine
• 40056-80-2
• C₁₆H₁₃Cl₂N₃O₃
• 366.1987
• .

• 5'-Uridylic acid, 2'-deoxy-, sodium salt
• 68982-99-0
• C₉H₁₃N₂O₈P·xNa
• .

• 5'-Uridylic acid, 2'-deoxy-5,6-dihydro-6-hydroxy-
• 68983-00-6
• C₉H₁₅N₂O₉P
• .

• 5H-Imidazo[1,2-a]azepinium,1-[(2,4-dichlorophenyl)methyl]-6,7,8,9-tetrahydro-3-phenyl-, bromide
• 400856-69-1
• C₂₁H₂₁Cl₂N₂·Br
• .