• 5-tert-butoxy-4-(tert-butoxycarbonyl)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-5-oxopentanoic acid (non-preferred name)
• 308357-14-4
• C₂₉H₃₅NO₈
• 525.5901
• .

• 5-Thiazolecarboxylic acid, 2-[(3,5-dinitrobenzoyl)amino]-4-methyl-,methyl ester
• 309293-19-4
• C₁₃H₁₀N₄O₇S
• .

• 5(4H)-Oxazolone, 2-(3-chlorophenyl)-4-(1H-indol-3-ylmethylene)-
• 101966-89-6
• C₁₈H₁₁ClN₂O₂
• .

• 5H-[1]Benzopyrano[3,4-c]pyridin-5-one,1,2,3,4-tetrahydro-8,9-dimethyl-
• 63265-63-4
• C₁₄H₁₅NO₂
• .

• 5,8-Methanoisoquinoline, 5,6,7,8-tetrahydro-, 2-oxide
• 105275-31-8
• C₁₀H₁₁NO
• .

• 5-Oxazolecarboxylic acid, 2-(bromomethyl)-, ethyl ester
• 138139-11-4
• C₇H₈BrNO₃
• .

• 5,5-bis(2-bromopropyl)pyrimidine-2,4,6(1H,3H,5H)-trione
• 18677-95-7
• C₁₀H₁₄Br₂N₂O₃
• 370.0378
• .

• 5-({[(2E,6E)-9-(3,3-dimethyloxiran-2-yl)-3,7-dimethylnona-2,6-dien-1-yl]oxy}methyl)-1,3-benzodioxole
• 18709-08-5
• C₂₃H₃₂O₄
• 372.4978
• .

• 5,5'-{[(4R,5S,6S,7R)-4,7-dibenzyl-5,6-dihydroxy-2-oxo-1,3-diazepane-1,3-diyl]dimethanediyl}bis(1,3-dihydro-2H-benzimidazol-2-one)
• 187275-06-5
• C₃₅H₃₄N₆O₅
• 618.6817
• .

• 5H-Thieno[3,2-b]thiopyran-2-sulfonamide, 6,7-dihydro-7-hydroxy-
• 105951-33-5
• C₇H₉NO₃S₃
• .

• 5(4H)-Oxazolone, 2-phenyl-4-(triphenylmethyl)-
• 55686-04-9
• C₂₈H₂₁NO₂
• .

• 5-methoxy-N,N-dimethyl-8-nitro-1,2,3,4-tetrahydronaphthalen-1-aminium chloride
• 64037-90-7
• C₁₃H₁₉ClN₂O₃
• 286.7546
• .

• 5-methoxy-N,N-dimethyl-8-pentanoyl-1,2,3,4-tetrahydronaphthalen-1-aminium chloride
• 64037-92-9
• C₁₈H₂₈ClNO₂
• 325.87342
• .

• 5-Fluorothiazol-2-ylamine
• 64588-82-5
• C₃H₃FN₂S
• 118.1327
• .

• 5H-1,3-Dioxolo[4,5-f]indole-7-carboxylic acid,5-methyl-6-(phenylmethyl)-, ethyl ester
• 141341-83-5
• C₂₀H₁₉NO₄
• .

• 5,6-dichloro-3-(2,3,4-tri-O-benzoylpentopyranosyl)-1,3-benzoxazol-2(3H)-one
• 19231-21-1
• C₃₃H₂₃Cl₂NO₉
• 648.443
• .

• 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,7-[[(2Z)-[(acetyloxy)imino](2-amino-4-thiazolyl)acetyl]amino]-3-ethenyl-8-oxo-, (6R,7R)-, phosphate (1:1)
• 663170-79-4
• C₁₆H₁₅N₅O₆S₂·H₃O₄P
• .

• 5(4H)-Oxazolone,2-(3-chlorophenyl)-4-[(9-ethyl-9H-carbazol-3-yl)methylene]-
• 101966-97-6
• C₂₄H₁₇ClN₂O₂
• .

• 5(4H)-Oxazolone,2-(3-chlorophenyl)-4-[(1,4-dimethyl-9H-carbazol-3-yl)methylene]-
• 101966-96-5
• C₂₄H₁₇ClN₂O₂
• .

• 5,12-Naphthacenedione,8-acetyl-7,8,9,10-tetrahydro-1,6,8,11-tetrahydroxy-, (R)-
• 63285-28-9
• C₂₀H₁₆O₇
• .

• 5-methyl[1,3]oxazolo[4,5-b]pyridin-2(3H)-one
• 55656-25-2
• C₇H₆N₂O₂
• 150.1347
• .

• 5-[(3,5-dimethyl-1H-pyrazol-1-yl)methyl]furan-2-carboxylic acid
• 312310-14-8
• C₁₁H₁₂N₂O₃
• 220.2246
• .

• 5-Isoquinolinol, 1-methoxy-, benzoate (ester)
• 651030-45-4
• C₁₇H₁₃NO₃
• .

• 5,8-Methano-1H-[1,2,4]triazolo[1,2-a]pyridazine-1,3(2H)-dione,6-(6-chloro-3-pyridinyl)tetrahydro-2-phenyl-, (5R,6S,8R)-rel-
• 500128-17-6
• C₁₈H₁₅ClN₄O₂
• .

• 5H-Benzo[a]phenoxazin-5-one, 2,3-dimethyl-6-(4-nitrophenyl)-
• 365217-47-6
• C₂₄H₁₆N₂O₄
• .

• 5-Isoquinolinesulfonamide,N-methyl-N-[1-(phenylmethyl)-2-(4-phenyl-1-piperazinyl)ethyl]-
• 130962-67-3
• C₂₉H₃₂N₄O₂S
• .

• 5H-Indeno[1,2-c]isoquinolin-5-one,6,11-dihydro-2,3,8,9-tetramethoxy-6,11-dimethyl-, ion(1-), sodium
• 140169-40-0
• C₂₂H₂₂NO₅·Na
• .

• 5-Hexenoic acid, 4-oxo-6-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, ethylester, (E)-
• 140169-54-6
• C₁₇H₂₆O₃
• .

• 5H-Inden-5-one,2,3,6,7-tetrahydro-1-[2-(2,6,6-trimethyl-1-cyclohexen-1-yl)ethenyl]-, (E)-
• 140169-60-4
• C₂₀H₂₆O
• .

• 5H-Indeno[1,2-c]isoquinolin-5-one,6,11-dihydro-2,3,8,9-tetramethoxy-6,11,11-trimethyl-
• 140169-42-2
• C₂₃H₂₅NO₅
• .

• 5-[(1E)-1-ethylprop-1-en-1-yl]-5-(1-methylethyl)pyrimidine-2,4,6(1H,3H,5H)-trione
• 64038-26-2
• C₁₂H₁₈N₂O₃
• 238.2829
• .

• 5-[(1E)-1-methylbut-1-en-1-yl]-5-(1-methylethyl)pyrimidine-2,4,6(1H,3H,5H)-trione
• 64038-29-5
• C₁₂H₁₈N₂O₃
• 238.2829
• .

• 5(4H)-Oxazolone, 2-(4-azidophenyl)-4-(phenylmethylene)-
• 105959-36-2
• C₁₆H₁₀N₄O₂
• .

• 5(4H)-Oxazolone, 4-[3-(4-azidophenyl)-2-propenylidene]-2-phenyl-
• 105959-40-8
• C₁₈H₁₂N₄O₂
• .

• 5(4H)-Oxazolone, 2-(4-azidophenyl)-4-(3-phenyl-2-propenylidene)-
• 105959-41-9
• C₁₈H₁₂N₄O₂
• .

• 5(4H)-Oxazolone, 4-[(4-azidophenyl)methylene]-2-(2-phenylethenyl)-
• 105959-43-1
• C₁₈H₁₂N₄O₂
• .

• 5(4H)-Oxazolone,4-[3-(4-azidophenyl)-2-propenylidene]-2-(2-phenylethenyl)-
• 105959-44-2
• C₂₀H₁₄N₄O₂
• .

• 5(4H)-Oxazolone,4-[(4-azidophenyl)methylene]-2-[4-(dimethylamino)phenyl]-
• 105959-47-5
• C₁₈H₁₅N₅O₂
• .

• 5(4H)-Oxazolone, 4-[(4-azidophenyl)methylene]-2-(2-thienyl)-
• 105959-48-6
• C₁₄H₈N₄O₂S
• .

• 5(4H)-Oxazolone, 4-[3-(4-azidophenyl)-2-propenylidene]-2-(2-thienyl)-
• 105959-49-7
• C₁₆H₁₀N₄O₂S
• .

• 5-Pyrimidinecarboxylic acid,4-(2-fluorophenyl)-1,2,3,4-tetrahydro-6-methyl-2-thioxo-, ethyl ester
• 301359-46-6
• C₁₄H₁₅FN₂O₂S
• .

• 5-Pyrimidinamine, 4-chloro-6-ethoxy-
• 63291-59-8
• C₆H₈ClN₃O
• .

• 5-Heptene-1,4-dione, 6-methyl-1-(2-thienyl)-
• 63297-59-6
• C₁₂H₁₄O₂S
• .

• 5-Hexen-2-ol, 2-methyl-6-(methylthio)-, (Z)-
• 63297-84-7
• C₈H₁₆OS
• .

• 5-Hexen-2-ol, 2-methyl-4-(methylthio)-
• 63297-85-8
• C₈H₁₆OS
• .

• 5-Hexen-3-ol, 5-methyl-6-(methylthio)-, (Z)-
• 63297-91-6
• C₈H₁₆OS
• .

• 5-Hexen-3-ol, 5-methyl-4-(methylthio)-
• 63297-92-7
• C₈H₁₆OS
• .

• 5-Heptene-1,4-dione, 6-methyl-1-phenyl-
• 63297-58-5
• C₁₄H₁₆O₂
• .

• 5-methylsulfanylbenzothiophene-2-carboxylic acid
• 310894-53-2
• C₁₀H₈O₂S₂
• 224.3
• .

• 5,5'-piperazine-1,4-diylbis(6-nitro-2,1,3-benzoxadiazole) 3,3'-dioxide
• 61785-83-9
• C₁₆H₁₂N₈O₈
• 444.3153
• .