• Octapeptin,N-(2-phenylglycyl) deriv. (9CI)
• 102647-56-3
• .

• Octanoic acid, ironsalt (1:?)
• 6535-20-2
• C8H16 O2 . x Fe
• 229-438-2
• 485.4555
• .

• Octanedioic acid,1,8-bis(2,5-dioxo-1-pyrrolidinyl) ester
• 68528-80-3
• C₁₆H₂₀N₂O₈
• 368.3386
• .

• Olean-12-ene-23,28-dioicacid, 3-hydroxy-, 28-(O-b-D-glucopyranosyl-(1®3)-O-[b-D-glucopyranosyl-(1®6)]-b-D-glucopyranosyl) 23-[(2S)-2-hydroxypropyl] ester, (3b,4a)- (9CI)
• 160492-61-5
• C51H82 O21
• .

• Oils,galbanum
• 8023-91-4
• .

• Oxazole,4,5-dihydro-2,4,5-trimethyl-, trans- (9CI)
• 23336-75-6
• C6H11 N O
• 245-592-3
• 113.15764
• .

• Oxazole,4,5-dimethyl-2-propyl-
• 53833-32-2
• C8H13 N O
• 258-817-5
• 139.19492
• .

• Oxirane,2,2'-[1,4-butanediylbis(oxymethylene)]bis-, homopolymer
• 29611-97-0
• C10 H18 O4
• 0
• .

• Oxirane,2-(5-methoxy-1,5-dimethylhexyl)-
• 40454-19-1
• C11H22 O2
• 254-924-6
• 186.29118
• .

• Olean-12-en-29-oicacid, 22-hydroxy-3-oxo-, methyl ester, (20a,22a)- (9CI)
• 121880-07-7
• C31H48 O4
• 0
• .

• Oxacyclooctatetraconta-13,17,21,29-tetraen-2-one,48-(7-amino-1-methylheptyl)-8,10,16,20,24,26,28,32,36,38,40,42,44,46-tetradecahydroxy-23-(a-D-mannopyranosyloxy)-9,15,17,19,21,25,31,33,39,41,47-undecamethyl-
• 11006-31-8
• C72H133 N O22
• 1363.94
• .

• Octadecanoic acid,17,18-dibromo-
• 79127-59-6
• C18H34 Br2 O2
• 0
• .

• Oxacyclohexadeca-3,5,11,13-tetraen-2-one,16-[(1S,2R,3S,5E,7S,8R)-2,8-dihydroxy-1,3,7-trimethyl-4-oxo-5-nonenyl]-8-hydroxy-3,15-dimethoxy-5,7,9,11-tetramethyl-,(3Z,5E,7R,8S,9S,11E,13E,15S,16R)- (9CI)
• 100632-37-9
• C33H52 O8
• 576.7612
• .

• O-Methyl-L-cysteine 1,2,3,6-tetrahydro-2,6-dioxopyrimidine-4-carboxylate
• 94314-00-8
• C₉H₁₃N₃O₆S
• 305-000-7
• 291.28102
• .

• Oxytocin,4-L-serine-8-L-isoleucine-
• 550-21-0
• C₄₁H₆₃N₁₁O₁₂S₂
• 966.1354
• .

• Olean-12-en-28-oicacid, 2,3,23-trihydroxy-, (2b,3b,4a)-
• 6989-24-8
• C30H48 O5
• 488.70
• .

• Oxyphenonium bromide
• 50-10-2
• C₂₁H₃₄BrNO₃
• 200-010-7
• 428.47
• .

• Oxirane,2-(6-heptenyl)-3-(2,4-pentadiynyl)- (9CI)
• 122122-03-6
• C14H18 O
• 202.2921
• .

• Olean-12-en-28-oicacid, 2,3,23-trihydroxy-, (2a,3b,4b)-
• 118711-55-0
• C30H48 O5
• 488.6991
• .

• Octadecanoic acid,chromium(3+) salt (3:1)
• 3843-17-2
• C18H36 O2 . 1/3 Cr
• 223-337-7
• 902.4
• .

• Olean-12-en-28-oicacid, 3-(b-D-glucopyranosyloxy)-2,16,23-trihydroxy-,O-b-D-xylopyranosyl-(1®4)-O-6-deoxy-a-L-mannopyranosyl-(1®2)-6-deoxy-b-D-galactopyranosyl ester, (2b,3b,4a,16a)- (9CI)
• 171746-12-6
• C53H86 O23
• .

• Oxacyclodotriaconta-3,5,7,9,11,29-hexaen-2-one,14,16,18,20,22,24,26,28-octahydroxy-31-methyl-32-(1-methylethyl)-,(3E,5E,7E,9E,11E,14S,16S,18S,20S,22R,24S,26R,28R,29E,31S,32S)-
• 154396-73-3
• C35H56 O10
• 636.8131
• .

• Onium compounds,1-[2-(carboxymethoxy)ethyl]-1-(carboxymethyl)-4,5-dihydro-2-norcoco alkylimidazolium, inner salts, disodium salts
• 68650-39-5
• C₁₆H₃₁NO
• 272-043-5
• 0
• .

• Octanoic acid,3,7-dimethyl-
• 5698-27-1
• C10H20 O2
• 227-175-8
• 172.26
• .

• Oxirane,2-[(4-nitrophenoxy)methyl]-
• 5255-75-4
• C9H9 N O4
• 226-057-3
• 195.19
• .

• Octadecanoic acid,3-oxo-2-tetradecyl-
• 51048-16-9
• C32H62 O3
• 0
• .

• Oxirane, methyl-, polymer with oxirane, monobutyl ether, phosphate
• 71662-44-7
• 0
• .

• Octadecanoic acid,octyl ester
• 109-36-4
• C₂₆H₅₂O₂
• 203-666-2
• 396.69
• .

• Octadecanoic acid,5-methyl-2-(1-methylethyl)cyclohexyl ester
• 93919-01-8
• C28H54 O2
• 299-983-9
• 422.72716
• .

• Olean-12-en-28-oicacid, 3-(a-L-arabinopyranosyloxy)-23-hydroxy-,O-6-deoxy-a-L-mannopyranosyl-(1®4)-O-b-D-glucopyranosyl-(1®6)-b-D-glucopyranosyl ester, (3b,4a)-
• 12672-45-6
• C53H86 O22
• 0
• .

• Oleana-11,13(18)-diene-3,29-diol,bis(hydrogen 1,2-benzenedicarboxylate), (3b,20b)- (9CI)
• 102416-29-5
• C46H56 O8
• 0
• .

• Oxazolo[2,3-i]purin-5(3H)-imine,7,8-dihydro-3-b-D-ribofuranosyl-,conjugate monoacid (9CI)
• 112529-18-7
• C12H15 N5 O5 . H
• 0
• .

• Olean-12-en-28-oicacid, 3-[(4-O-b-D-glucopyranosyl-b-D-glucopyranosyl)oxy]-16-(b-D-glucopyranosyloxy)-21,29-dihydroxy-,g-lactone, (3b,16a,20b,21b)- (9CI)
• 148299-16-5
• C48H76 O20
• .

• Octadecanoic acid,2-methoxyethyl ester
• 111-09-1
• C21H42 O3
• 203-832-4
• 342.5564
• .

• Oils, tamarind
• 72968-49-1
• 0
• .

• Oxazolo[3,2-d][1,4]benzodiazepin-6(5H)-one,10-bromo-11b-(2-fluorophenyl)-2,3,7,11b-tetrahydro-
• 59128-97-1
• C17H14 Br F N2 O2
• 377.24
• .

• Octadecanamide,N,N'-(iminodi-2,1-ethanediyl)bis-
• 10220-90-3
• C40H81 N3 O2
• 233-538-1
• 636.09004
• .

• Oxacyclohexadeca-3,5,11,13-tetraen-2-one,8-hydroxy-3,15-dimethoxy-5,7,9,11-tetramethyl-16-[(1S,2E)-1-methyl-3-[(2R)-3-methyl-2-(1-methylethyl)-2H-pyran-6-yl]-2-buten-1-yl]-,(3Z,5E,7R,8S,9S,11E,13E,15S,16R)-
• 111720-38-8
• C35H52 O6
• .

• Olean-12-en-29-oicacid, 22-hydroxy-3-oxo-, g-lactone, (20a,22a)-
• 84104-70-1
• C30H44 O3
• 0
• .

• Oligomycin,26-demethyl-26-ethyl- (9CI)
• 132707-68-7
• C46H76 O11
• 0
• .

• Octadecanoic acid,2-hydroxy-
• 629-22-1
• C18H36 O3
• 300.47664
• .

• Oxyntomodulin (rat)(9CI)
• 159002-68-3
• C192H295 N61 O60 S
• 0
• .

• Octanoic acid,1,1'-[(1,2-dithioxo-1,2-ethanediyl)bis(imino-2,1-ethanediyl)] ester
• 24928-72-1
• C22H40 N2 O4 S2
• 246-536-0
• 460.694
• .

• Oxireno[8,9][1,6]dioxacyclododecino[2,3,4-gh]pyrrolizine-7,11-dione,8-ethylidene-2,4,5,5a,8,9,9a,10a,13,13b-decahydro-9a-(hydroxymethyl)-10a-methyl-, (5aR,13bR)- (9CI)
• 113866-45-8
• C18H23 N O6
• .

• Olean-12-en-28-oicacid, 2,3,19,23,24-pentahydroxy-, b-D-glucopyranosyl ester, (2a,3b,19a)-
• 109742-50-9
• C36H58 O12
• .

• Origanum oil
• 8007-11-2
• 0
• .

• Octanamide,N,N'-[1-[[[3-(dimethylamino)propyl]amino]carbonyl]-1,5-pentanediyl]bis-,monohydrochloride (9CI)
• 73067-74-0
• C27H54 N4 O3 . Cl H
• 277-265-6
• 519.2036
• .

• Oxirane,2-[(2-ethylphenoxy)methyl]-
• 15620-78-7
• C11H14 O2
• 178.2277
• .

• Octadecenoic acid, 2-(hexadecyloxy)-1,3-propanediyl ester
• 78610-63-6
• C₅₅H₁₀₄O₅
• 0
• .

• Octadecane,1-(ethenyloxy)-, homopolymer
• 9003-96-7
• C20 H40 O
• 213-208-3
• 0
• .