• 5,5'-[but-2-yne-1,4-diylbis(oxy)]bis(1,3-benzodioxole)
• 67238-29-3
• C₁₈H₁₄O₆
• 326.3002
• .

• 5,7-dihydrazinyl-7aH-imidazo[4,5-b]pyridine
• 37436-97-8
• C₆H₉N₇
• 179.1826
• .

• 5,6-diamino-1-hydroxypyrimidin-2(1H)-one
• 37440-40-7
• C₄H₆N₄O₂
• 142.116
• .

• 5H-Pyrrolo[3,4-b]pyridine-5,7(6H)-dione, 6-(4-chlorophenyl)-
• 37458-38-1
• C₁₃H₇ClN₂O₂
• .

• 5H-Pyrrolo[3,4-b]pyridine-5,7(6H)-dione, 6-(2-pyridinyl)-
• 37458-51-8
• C₁₂H₇N₃O₂
• .

• 5-methylidenebicyclo[2.2.0]hex-2-ene
• 67254-49-3
• C₇H₈
• 92.1384
• .

• 5-Pyrimidinecarbonitrile, 1,2,3,4-tetrahydro-2,4-dioxo-6-phenyl-
• 37465-59-1
• C₁₁H₇N₃O₂
• .

• 5-Hepten-2-one, 6-(4-methyl-1,3-dioxan-2-yl)-
• 37477-49-9
• C₁₂H₂₀O₃
• .

• 5-Hepten-2-one, 6-(4-methyl-1,3-dioxolan-2-yl)-
• 37477-53-5
• C₁₁H₁₈O₃
• .

• 5-Isoquinolinamine, 1,2,3,4-tetrahydro-2-propyl-, monohydrobromide
• 37481-24-6
• C₁₂H₁₈N₂·BrH
• .

• 5-Pyrimidinamine, 4-chloro-6-(methylthio)-
• 37489-39-7
• C₅H₆ClN₃S
• .

• 5-(4-aminophenyl)-2-iminio-2,3-dihydro-1,3,4-oxadiazol-3-ium dichloride
• 67292-59-5
• C₈H₁₀Cl₂N₄O
• 249.0972
• .

• 5H-Tetrazol-5-one, 1-cyclohexyl-1,2-dihydro-
• 37495-20-8
• C₇H₁₂N₄O
• .

• 5H-Tetrazol-5-one, 1-cyclopentyl-1,2-dihydro-
• 37495-21-9
• C₆H₁₀N₄O
• .

• 5-{ethyl[2-(4-methoxyphenyl)-1-methylethyl]amino}pentyl 3,4,5-trimethoxybenzoate
• 67293-44-1
• C₂₇H₃₉NO₆
• 473.6017
• .

• 5-(furan-2-ylmethylidene)-3-phenyl-2-thioxo-1,3-thiazolidin-4-one
• 37530-61-3
• C₁₄H₉NO₂S₂
• 287.3568
• .

• 5-Hepten-2-ol, 2,4-dimethyl-, (5E)-
• 67319-52-2
• C₉H₁₈O
• .

• 5-(4-hydroxybenzyl)imidazolidine-2,4-dione
• 58942-04-4
• C₁₀H₁₀N₂O₃
• 206.198
• .

• 5-ethylidenenonane
• 37549-88-5
• C₁₁H₂₂
• 154.2924
• .

• 5-(4-chlorobenzyl)-2,4,6-trioxohexahydropyrimidin-5-yl propanoate
• 37555-94-5
• C₁₄H₁₃ClN₂O₅
• 324.7164
• .

• 5-amino-6-[5-(6-amino-9H-purin-9-yl)-3-hydroxytetrahydrofuran-2-yl]-2-(carbamoylamino)hexanamide (non-preferred name)
• 67349-38-6
• C₁₆H₂₅N₉O₄
• 407.4276
• .

• 5-bromo-2'-deoxy-5'-O-[hydroxy(methyl)phosphoryl]uridine ammoniate (1:1)
• 37571-18-9
• C₁₀H₁₇BrN₃O₇P
• 402.1356
• .

• 5-chloro-1,2-diphenyl-1,2-dihydro-3H-pyrazol-3-one
• 37585-37-8
• C₁₅H₁₁ClN₂O
• 270.7136
• .

• 5-methyl-5-nitrodihydropyrimidine-2,4(1H,3H)-dione
• 67383-66-8
• C₅H₇N₃O₄
• 173.1268
• .

• 5-Pyrimidinecarboxylic acid, 2-(methylthio)-4-(trifluoromethyl)-
• 149771-17-5
• C₇H₅F₃N₂O₂S
• .

• 5-Hexen-1-yn-3-ol, 1-phenyl-
• 149815-71-4
• C₁₂H₁₂O
• .

• 5-chloro-1-[(2S,5R)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidine-2,4(1H,3H)-dione
• 137530-46-2
• C₈H₉ClN₂O₄S
• 264.6861
• .

• 5-bromo-1-[(2S,5R)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidine-2,4(1H,3H)-dione
• 137530-47-3
• C₈H₉BrN₂O₄S
• 309.1371
• .

• 5-Heptynoic acid, 7-[[(trifluoromethyl)sulfonyl]oxy]-, methyl ester
• 149862-39-5
• C₉H₁₁F₃O₅S
• .

• 5-(3,4-dibromobutyl)pyridine-2-carboxylic acid
• 37642-33-4
• C₁₀H₁₁Br₂NO₂
• 337.0078
• .

• 5-Cycloheptene-1,4-dione, 7-(benzoyloxy)-2,2,5-trimethyl-
• 149898-13-5
• C₁₇H₁₈O₄
• .

• 5-methyl-9-(4-methylphenyl)tetrazolo[1,5-a][1,2,4]triazolo[4,3-c]pyrimidine
• 67433-55-0
• C₁₃H₁₁N₇
• 265.2733
• .

• 5-methyl-9-(3-nitrophenyl)tetrazolo[1,5-a][1,2,4]triazolo[4,3-c]pyrimidine
• 67433-57-2
• C₁₂H₈N₈O₂
• 296.2443
• .

• 5-Cycloheptene-1,4-diol, 7-[(4-methoxyphenyl)methoxy]-2,2,5-trimethyl-,1-benzoate
• 149898-34-0
• C₂₅H₃₀O₅
• .

• 5-Cycloheptene-1,4-diol, 7-[(4-methoxyphenyl)methoxy]-2,2,5-trimethyl-,4-acetate 1-benzoate
• 149898-35-1
• C₂₇H₃₂O₆
• .

• 5-Cycloheptene-1,4-diol, 7-[(4-methoxyphenyl)methoxy]-2,2,5-trimethyl-,4-benzoate
• 149898-97-5
• C₂₅H₃₀O₅
• .

• 5-Cycloheptene-1,4-diol, 7-[(4-methoxyphenyl)methoxy]-2,2,5-trimethyl-,4-acetate
• 149898-98-6
• C₂₀H₂₈O₅
• .

• 5-(1-methylethyl)-3-phenylpyrrolidin-3-ol hydrochloride
• 67465-06-9
• C₁₃H₂₀ClNO
• 241.757
• .

• 5-(4-methoxyphenyl)-3-phenylpyrrolidin-3-ol hydrochloride
• 67465-09-2
• C₁₇H₂₀ClNO₂
• 305.7992
• .

• 5-methyl-3-phenylpyrrolidin-3-ol hydrochloride
• 67465-12-7
• C₁₁H₁₆ClNO
• 213.7038
• .

• 5,11-dimethyl-2H-pyrido[4,3-b]carbazol-2-ol
• 37687-33-5
• C₁₇H₁₄N₂O
• 262.3059
• .

• 5-Pyrimidinecarboxylic acid, 4-hexyl-1,2,3,4-tetrahydro-6-methyl-2-oxo-,ethyl ester
• 149990-62-5
• C₁₄H₂₄N₂O₃
• .

• 5-[(dimethylcarbamoyl)oxy]-1-methyl-2-[(E)-phenyldiazenyl]pyridinium bromide
• 67465-59-2
• C₁₅H₁₇BrN₄O₂
• 365.2251
• .

• 5-Isoxazolecarboxylic acid, 3-(4-methylphenyl)-, ethyl ester
• 377062-62-9
• C₁₃H₁₃NO₃
• .

• 5-(4-chlorophenyl)-3-phenylpyrrolidin-3-ol hydrochloride
• 67466-47-1
• C₁₆H₁₇Cl₂NO
• 310.2183
• .

• 5-ethyl-3-phenylpyrrolidin-3-ol hydrochloride
• 67466-56-2
• C₁₂H₁₈ClNO
• 227.7304
• .

• 5-(naphtho[2,3-d][1,3]dioxol-6-ylmethyl)-7,8-dihydro[1,3]dioxolo[4,5-g]isoquinoline
• 37708-06-8
• C₂₂H₁₇NO₄
• 359.3747
• .

• 5-(naphtho[2,3-d][1,3]dioxol-6-ylmethyl)-5,6,7,8-tetrahydro[1,3]dioxolo[4,5-g]isoquinoline
• 37708-10-4
• C₂₂H₁₉NO₄
• 361.3906
• .

• 5-[(6,7-dimethoxynaphthalen-2-yl)methyl]-5,6,7,8-tetrahydro[1,3]dioxolo[4,5-g]isoquinoline
• 37708-12-6
• C₂₃H₂₃NO₄
• 377.433
• .

• 5-ethoxy-1,2,4-thiadiazole-3-carboxylic acid
• 67472-43-9
• C₅H₆N₂O₃S
• 174.1777
• .