• 1,2-difluoro-3-nitrobenzene
• 6921-22-8
• C₆H₃F₂NO₂
• 

• 1,2-difluoro-4,5-dimethoxybenzene
• 203059-80-7
• C₈H₈F₂O₂
• 

• 1,2-difluoro-4-(trifluoromethyl)benzene
• 32137-19-2
• C₇H₃F₅
• 

• 1,2-difluoro-4-[4-(4-pentylcyclohexyl)cyclohexyl]benzene
• 118164-51-5
• C₂₃H₃₄F₂
• 

• 1,2-difluoro-4-[4-(4-propylcyclohexyl)cyclohexyl]benzene
• 82832-57-3
• C₂₁H₃₀F₂
• 

• 1,2-difluoro-4-iodobenzene
• 64248-58-4
• C₆H₃F₂I
• 

• 1,2-difluoro-4-isothiocyanatobenzene
• 113028-75-4
• C₇H₃F₂NS
• 

• 1,2-difluoro-4-methoxybenzene
• 115144-40-6
• C₇H₆F₂O
• 

• 1,2-difluoro-4-methylbenzene
• 2927-34-6
• C₇H₆F₂
• 

• 1,2-difluoro-4-nitrobenzene
• 369-34-6
• C₆H₃F₂NO₂
• 

• 1,2-difluoroethane
• 624-72-6
• C₂H₄F₂
• 

• 1,2-dihydro-1,2,4-triazole-3-thione
• 3179-31-5
• C₂H₃N₃S
• 

• 1,2-dihydroacenaphthylen-1-ol
• 6306-07-6
• C₁₂H₁₀O
• 

• 1,2-dihydroacenaphthylen-1-yl acetate
• 14966-36-0
• C₁₄H₁₂O₂
• 

• 1,2-dihydrobenzotriazol-4-one
• 26725-51-9
• C₆H₅N₃O
• 

• 1,2-dihydroindazol-3-one
• 7364-25-2
• C₇H₆N₂O
• 

• 1,2-dihydroindazol-6-one
• 23244-88-4
• C₇H₆N₂O
• 

• 1,2-dihydronaphthalene
• 447-53-0
• C₁₀H₁₀
• 

• 1,2-dihydropyrazolo[3,4-d]pyrimidin-4-one
• 315-30-0
• C₅H₄N₄O
• 

• 1,2-dihydropyrazolo[3,4-d]pyrimidine-4,6-dione
• 2465-59-0
• C₅H₄N₄O₂
• 

• 1,2-dihydropyridazine-3,6-dione
• 123-33-1
• C₄H₄N₂O₂
• 

• 1,2-dihydroxyanthracene-9,10-dione
• 72-48-0
• C₁₄H₈O₄
• 

• 1,2-diiodobenzene
• 615-42-9
• C₆H₄I₂
• 

• 1,2-diiodoethane
• 624-73-7
• C₂H₄I₂
• 

• 1,2-dimethoxy-12-methyl-[1,3]benzodioxolo[5,6-c]phenanthridin-12-ium
• 34316-15-9
• C₂₁H₁₈NO₄⁺
• 

• 1,2-dimethoxy-12-methyl-[1,3]benzodioxolo[5,
  6-c]phenanthridin-12-ium
• 3895-92-9
• C₂₁H₁₈ClNO₄
• 

• 1,2-dimethoxy-3-methylbenzene
• 4463-33-6
• C₉H₁₂O₂
• 

• 1,2-dimethoxy-4,5-dinitrobenzene
• 3395-03-7
• C₈H₈N₂O₆
• 

• 1,2-dimethoxy-4-methylbenzene
• 494-99-5
• C₉H₁₂O₂
• 

• 1,2-dimethoxy-4-nitrobenzene
• 709-09-1
• C₈H₉NO₄
• 

• 1,2-dimethoxy-4-prop-2-enylbenzene
• 93-15-2
• C₁₁H₁₄O₂
• 

• 1,2-dimethoxybenzene
• 91-16-7
• C₈H₁₀O₂
• 

• 1,2-dimethoxypropane
• 7778-85-0
• C₅H₁₂O₂
• 

• 1,2-dimethyl-3,5-diphenylpyrazol-1-ium
• 49866-87-7
• C₁₇H₁₇N₂⁺
• 

• 1,2-dimethyl-3H-benzo[e]indole
• 57582-31-7
• C₁₄H₁₃N
• 

• 1,2-dimethyl-4-(trifluoromethyl)benzene
• 78164-31-5
• C₉H₉F₃
• 

• 1,2-dimethyl-5,6-dihydro-4H-pyrimidine
• 4271-96-9
• C₆H₁₂N₂
• 

• 1,2-dimethyl-5-nitroimidazole
• 551-92-8
• C₅H₇N₃O₂
• 

• 1,2-dimethylhydrazine
• 306-37-6
• C₂H₁₀Cl₂N₂
• 

• 1,2-dimethylimidazole
• 1739-84-0
• C₅H₈N₂
• 

• 1,2-dimethylimidazole-4-sulfonyl chloride
• 137049-02-6
• C₅H₇ClN₂O₂S
• 

• 1,2-dimethylindole
• 875-79-6
• C₁₀H₁₁N
• 

• 1,2-dimethylindole-3-carbaldehyde
• 38292-40-9
• C₁₁H₁₁NO
• 

• 1,2-dimethylindole-3-carbonitrile
• 51072-84-5
• C₁₁H₁₀N₂
• 

• 1,2-dimethylindole-3-carboxylic acid
• 20357-15-7
• C₁₁H₁₁NO₂
• 

• 1,2-dimethylnaphthalene
• 573-98-8
• C₁₂H₁₂
• 

• 1,2-dimethylpiperazine
• 25057-77-6
• C₆H₁₄N₂
• 

• 1,2-dinitronaphthalene
• 27478-34-8
• C₁₀H₆N₂O₄
• 

• 1,2-diphenyl-2-propan-2-yloxyethanone
• 6652-28-4
• C₁₇H₁₈O₂
• 

• 1,2-diphenylbenzene
• 84-15-1
• C₁₈H₁₄
• 

• 1,2-diphenylbenzimidazole
• 2622-67-5
• C₁₉H₁₄N₂
• 

• 1,2-diphenylbutan-1-one
• 16282-16-9
• C₁₆H₁₆O
• 

• 1,2-diphenylcycloocta-1,5-diene
• 12277-88-2
• C₂₀H₂₀Pt⁺²
• 

• 1,2-diphenylethanamine
• 25611-78-3
• C₁₄H₁₅N
• 

• 1,2-diphenylethane-1,2-diamine
• 16635-95-3
• C₁₄H₁₆N₂
• 

• 1,2-diphenylethane-1,2-diol
• 655-48-1
• C₁₄H₁₄O₂
• 

• 1,2-diphenylethane-1,2-dione
• 134-81-6
• C₁₄H₁₀O₂
• 

• 1,2-diphenylethanone
• 451-40-1
• C₁₄H₁₂O
• 

• 1,2-diphenylethenylbenzene
• 58-72-0
• C₂₀H₁₆
• 

• 1,2-diphenylguanidine
• 102-06-7
• C₁₃H₁₃N₃
• 

• 1,2-dipyridin-2-ylethane-1,2-dione
• 492-73-9
• C₁₂H₈N₂O₂
• 

• 1,2-dithiophen-2-ylethane-1,2-dione
• 7333-07-5
• C₁₀H₆O₂S₂
• 

• 1,2-oxazol-3-amine
• 1750-42-1
• C₃H₄N₂O
• 

• 1,2-oxazole
• 288-14-2
• C₃H₃NO
• 

• 1,2-oxazole-3-carbaldehyde
• 89180-61-0
• C₄H₃NO₂
• 

• 1,2-oxazole-3-carboxylic acid
• 3209-71-0
• C₄H₃NO₃
• 

• 1,2-oxazole-4-carboxylic acid
• 6436-62-0
• C₄H₃NO₃
• 

• 1,2-oxazole-5-carbonyl chloride
• 62348-13-4
• C₄H₂ClNO₂
• 

• 1,2-oxazole-5-carbothioamide
• 175334-72-2
• C₄H₄N₂OS
• 

• 1,2-oxazole-5-carboxylic acid
• 21169-71-1
• C₄H₃NO₃
• 

• 1,2-thiazole
• 288-16-4
• C₃H₃NS
• 

• 1,2:3,4-Di-O-isopropylidene-D-galactopyranose
• 4064-06-6
• C12H20O6
• 

• 1,2:3,5-Di-O-isopropylidene
• 25904-06-7
• C11H18O5
• 

• 1,2:5,6-Bis-O-(1-methylethylidene)-D-mannitol
• 1707-77-3
• C12H22O6
• 

• 1,2:5,6-Di-O-cyclohexylidene-alpha-D-glucofuranose
• 23397-76-4
• C18H28O6
• 

• 1,2:5,6-Di-O-isopropylidene-3-O-(methylsulfonyl)-alpha-D-glucofuranose
• 5450-26-0
• C13H22O8S
• 

• 1,2:5,6-Di-O-isopropylidene-alpha-D-allofuranose
• 2595-05-3
• C12H20O6
• 

• 1,3,2λ
• 274-07-7
• C₆H₄BO₂
• 

• 1,3,2-Dioxaborinane,2-[4-(bromomethyl)phenyl]-5,5-dimethyl-
• 143805-78-1
• C12H16 B Br O2
• 

• 1,3,2-Dioxaborolane,2,2'-[(1Z)-1,2-diphenyl-1,2-ethenediyl]bis[4,4,5,5-tetramethyl-
• 151416-94-3
• C26H34 B2 O4
• 

• 1,3,2-Dioxaborolane,2-(4-fluoro-2-methylphenyl)-4,4,5,5-tetramethyl-
• 815631-56-2
• C13H18 B F O2
• 

• 1,3,2-Dioxaborolane,2-[2-(2-furanyl)phenyl]-4,4,5,5-tetramethyl-
• 876316-28-8
• C16H19 B O3
• 

• 1,3,2-Dioxaborolane,2-[3-(2-furanyl)phenyl]-4,4,5,5-tetramethyl-
• 876316-29-9
• C16H19 B O3
• 

• 1,3,2-Dioxaborolane,2-[4-(2-furanyl)phenyl]-4,4,5,5-tetramethyl-
• 868755-79-7
• C16H19 B O3
• 

• 1,3,2-Dioxaborolane,4,4,5,5-tetramethyl-2-[4-(methylthio)phenyl]-
• 190788-58-0
• C13H19BO2S
• 

• 1,3,2-dioxathiane 2-oxide
• 4176-55-0
• C₃H₆O₃S
• 

• 1,3,2-dioxathiolane 2,2-dioxide
• 1072-53-3
• C₂H₄O₄S
• 

• 1,3,2-dioxathiolane 2-oxide
• 3741-38-6
• C₂H₄O₃S
• 

• 1,3,3,3-tetrafluoro-1-methoxy-2-(trifluoromethyl)prop-1-ene
• 360-53-2
• C₅H₃F₇O
• 

• 1,3,3,5,5-hexamethyltrisiloxane
• 1189-93-1
• C6H20O2Si3
• 

• 1,3,3-Trimethyl-2-(formylmethylene)indoline
• 84-83-3
• C13H15NO
• 

• 1,3,3-trimethyl-2-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-3,7,12,
  16-tetramethyl-18-(2,6,6-trimethylcyclohex-2-en-1-yl)octadeca-1,3,5,7,9,
  11,13,15,17-nonaenyl]cyclohexene
• 7488-99-5
• C₄₀H₅₆
• 

• 1,3,3-trimethyl-2-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-3,7,12,
  16-tetramethyl-18-(2,6,6-trimethylcyclohexen-1-yl)octadeca-1,3,5,7,9,11,
  13,15,17-nonaenyl]cyclohexene
• 7235-40-7
• C₄₀H₅₆
• 

• 1,3,3-trimethyl-2-methylideneindole
• 118-12-7
• C₁₂H₁₅N
• 

• 1,3,3a,4,6,6a-hexahydroimidazo[4,5-d]imidazole-2,5-dione
• 496-46-8
• C₄H₆N₄O₂
• 

• 1,3,3a,4,6,6a-hexahydropentalene-2,5-dione
• 51716-63-3
• C₈H₁₀O₂
• 

• 1,3,4,5,6,7,8-heptafluoronaphthalen-2-ol
• 727-49-1
• C₁₀HF₇O
• 

• 1,3,4,5-tetrahydro-1-benzazepin-2-one
• 4424-80-0
• C₁₀H₁₁NO
• 

• 1,3,4,5-tetramethylcyclohexa-3,5-diene-1,2-disulfonyl chloride
• 97997-76-7
• C₁₀H₁₄Cl₂O₄S₂
• 

• 1,3,4,6-Tetra-O-acetyl-alpha-D-glucopyranose
• 4292-12-0
• C14H20O10
•