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Searching by Functional Groups and Common Heterocyclic Rings | Functional Groups Available | Functional Group Class Terms | Ring Terms | Searching by CAS Registry Number

Functional Groups Available in CASREACT

Chemical Abstracts Service, 1993. Reproduced for educational purposes with permission from CAS, a Division of the American Chemical Society.

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A
  • Acetal
  • Acetal, Hemi USE Hemiacetal
  • Acetal, Thio USE Thioacetal
  • Acetyl
  • Acid Halide
  • Acid, Peroxy USE Peroxy Acid
  • Acid, Unsatd USE Unsatd Acid
  • Acid, Unsaturated USE Unsaturated Acid
  • Acyclic Alkene
  • Acyclic Ketone
  • Acyl metal
  • Alcohol, Cyclic USE Cyclic Alcohol
  • Alcohol, Primary USE Primary Alcohol
  • Alcohol, Secondary USE Secondary Alcohol
  • Alcohol, Tertiary USE Tertiary Alcohol
  • Aldehyde, Unsatd USE Unsatd Aldehyde
  • Aldehyde, Unsaturated USE Unsaturated Aldehyde
  • Alkene, Cyclic USE Cyclic Alkene
  • Alkene, Pi USE Pi-Alkene
  • Alkyne, Pi USE Pi-Alkyne
  • Allyl Halide
  • Allyl, Pi USE Pi-Allyl
  • Amide
  • Amide, Sulfon USE Sulfonamide
  • Amide, Thio USE Thioamide
  • Amide, Unsatd USE Unsatd Amide
  • Amide, Unsaturated USE Unsaturated Amide
  • Amidine
  • Amine, Chlor USE Chloramine
  • Amine, En USE Enamine
  • Amine, Hydroxyl USE Hydroxylamine
  • Amine, Notros USE Notrosamine
  • Amine Oxide
  • Amine, Primary USE Primary Amine
  • Amine, Secondary USE Secondary Amine
  • Amine, Tertiary USE Tertiary Amine
  • Ammonium, Quaternary USE Quarternary Ammonium
  • Anhydride
  • Arene, Metal USE Metal Arene
  • Aryl Halide
  • Arylsulfonyl
  • Azide
  • Azide, Hydr USE Hydrazide
  • Azine
  • Azine, Hydr USE Hydrazine
  • Aziridine
  • Azo
  • Azo, Di USE Diazo
  • Azone, Hydr USE Hydrazone
  • Azonium, Di USE Diazonium
  • Azoxy

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B
  • Bond, Metal-Metal USE Metal-Metal Bond
C
  • Carbamate
  • Carbene, Metal USE Metal Carbene
  • Carbocycle, Metallo USE Metallocarbocycle
  • Carbonate
  • Carbonyl, Metal USE Metal Carbonyl
  • Carbonyl, Mu- USE Mu-Carbonyl
  • Carbonyl, Thio USE Thiocarbonyl
  • Carboxy, Thio USE Thiocarboxy
  • Carboxylate
  • Carboxylic
  • Cephen
  • Chloramine
  • Cyanimide
  • Cyanate
  • Cyanate, Iso USE Isocyanate
  • Cyanate, Isothio USE Isothiocyanate
  • Cyanate, Thio USE Thiocyanate
  • Cyanohydrin
  • Cyclic Alcohol
  • Cyclic Alkene
  • Cyclic Ketone
  • Cyclopentadienyl, Metal USE Metal Cyclopentadienyl
  • Cyclopropyl

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D
  • Diazo
  • Diazonium
  • Diene
  • Dienyl, Metal Cyclopenta USE Metal Cyclopentadienyl
  • Dihalide, Gem USE Gem-Dihalide
  • Dihalide, Vic USE Vic-Dihalide
  • Diimide
  • Disulfide
E
  • Enamine
  • Enol
  • Enol Ether
  • Enol Ether, Silyl USE Silyl Enol Ether
  • Enyne
  • Episulfide
  • Epoxide
  • Ester, Ortho- USE Ortho-Ester
  • Ester, Peroxy USE Peroxy Ester
  • Ester, Unsatd USE Unsatd Ester
  • Ester, Unsaturated USE Unsaturated Ester
  • Ether
  • Ether, Enol USE Enol Ether
  • Ether, Imino USE Imino Ether
  • Ether, Silyl Enol USE Silyl Enol Ether

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F
  • Formate, Halo USE Haloformate
G
  • Gem-Dihalide
  • Glycol
  • Group, P-N USE P-N Group
  • Group, P-O USE P-O Group
  • Group, P-S USE P-S Group
  • Group, S-O USE S-O Group
  • Group, Se USE Se Group
  • Group, Te USE Te Group
  • Guanidine
H
  • Halide, Acid USE Acid Halide
  • Halide, Allyl USE Allyl Halide
  • Halide, Aryl USE Aryl Halide
  • Halide, Gem-Di USE Gem-Dihalide
  • Halide, Metal USE Metal Halide
  • Halide, Sulfenyl USE Sulfenyl Halide
  • Halide, Sulfinyl USE Sulfinyl Halide
  • Halide, Sulfonyl USE Sulfonyl Halide
  • Halide, Vic-Di USE Vic-Dihalide
  • Halide, Vinyl USE Vinyl Halide
  • Haloformate
  • Halohydrin
  • Hemiacetal
  • Hydrazide
  • Hydrazine
  • Hydrazone
  • Hydride, An USE Anhydride
  • Hydride, Metal USE Metal Hydride
  • Hydrin, Cyano USE Cyanohydrin
  • Hydrin, Halo USE Halohydrin
  • Hydroperoxide
  • Hydroxylamine

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I
  • Imide
  • Imide, Cyan USE Cyanimide
  • Imide, Di USE Diimide
  • Imine
  • Imine, Keten USE Ketenimine
  • Imino Ether
  • Isocyanate
  • Isonitrile
  • Isothiocyanate
K
  • Ketal
  • Ketal, Thio USE Thioketal
  • Ketene
  • Ketenimine
  • Ketone, Cyclic USE Cyclic Ketone
  • Ketone, Unsatd USE Unsatd Ketone
  • Ketone, Unsaturated USE Unsaturated Keton
L
  • Lactam
  • Lactone

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M
  • Mesyl
  • Metal Arene
  • Metal Carbene
  • Metal Carbonyl
  • Metal Cyclopentadienyl
  • Metal Halide
  • Metal Hydride
  • Metal-Metal Bond
  • Metal Nitrogen
  • Metal Nitrosyl
  • Metal, Organo USE Organometal
  • Metal Phosphine
  • Metal Sulfur
  • Metallocarbocycle
  • Mu-Carbonyl
N
  • Nitrile
  • Nitrile, Iso USE Isonitrile
  • Nitrile Oxide
  • Nitrile, Unsatd USE Unsatd Nitrile
  • Nitrile, Unsaturated USE Unsaturated Nitrile
  • Nitrite
  • Nitro
  • Nitrogen, Metal USE Metal Nitrogen
  • Nitrone
  • Notrosamine
  • Nitroso
  • Nitrosyl, Metal USE Metal Nitrosyl
  • Nitroxide

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O
  • O-Quinone
  • Organometal
  • Ortho-Ester
  • Oxide, Amine USE Amine Oxide
  • Oxide, Ep USE Epoxide
  • Oxide, Hydroper USE Hydroperoxide
  • Oxide, Nitr USE Nitroxide
  • Oxide, Nitrile USE Nitrile Oxide
  • Oxide, Per USE Peroxide
  • Oxime
  • Oxonium
P
  • P-N Group
  • P-O Group
  • P-Quinone
  • P-S Group
  • Penam
  • Pentadienyl, Metal Cyclo USE Metal Cyclopentadienyl
  • Peroxide
  • Peroxide, Hydro USE Hydroperoxide
  • Peroxy Acid
  • Peroxy Ester
  • Phenol
  • Phenol, Thio USE Thiophenol
  • Phosphate
  • Phosphine, Metal USE Metal Phosphine
  • Phosphite
  • Phosphonate
  • Phosphonium
  • Phosphorus Ylide
  • Pi-Alkene
  • Pi-Alkyne
  • Pi-Allyl
  • Primary Alcohol
  • Primary Amine
  • Propyl, Cyclo USE Cyclopropyl
  • Purine

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Q
  • Quarternary Ammonium
  • Quinone, O- USE O-Quinone
  • Quinone, P- USE P-Quinone
S
  • S-O Group
  • Se Group
  • Secondary Alcohol
  • Secondary Amine
  • Selenide
  • Selenol
  • Silyl
  • Silyl Enol Ether
  • Sulfenyl Halide
  • Sulfide
  • Sulfide, Di USE Disulfide
  • Sulfide, Epi USE Episulfide
  • Sulfinate
  • Sulfinyl Halide
  • Sulfonamide
  • Sufone
  • Sulfonyl, Aryl USE Arylsulfonyl
  • Sulfonyl Halide
  • Sulfonyloxy
  • Sulfoxide
  • Sulfur, Metal USE Metal Sulfur
  • Sulfur Ylide

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T
  • Te Group
  • Tertiary Alcohol
  • Tertiary Amine
  • Thioacetal
  • Thioamide
  • Thiocarbonyl
  • Thiocarboxy
  • Thiocyanate
  • Thiocyanate, Iso USE Isothiocyanate
  • Thioketal
  • Thiol
  • Thione
  • Thiophenol
  • Thiourea
  • Triazene
  • Trihalide
U
  • Unsatd Acid
  • Unsatd Aldehyde
  • Unsatd Amide
  • Unsatd Ester
  • Unsatd Ketone
  • Unsatd Nitrile
  • Unsaturated Acid
  • Unsaturated Aldehyde
  • Unsaturated Amide
  • Unsaturated Ester
  • Unsaturated Ketone
  • Unsaturated Nitrile
  • Urea
  • Urea, Thio USE Thiourea
V
  • Vic-Dihalide
  • Vinyl Halide
Y
  • Ylide, Sulfur USE Sulfur Ylide

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Last modified: June 24, 2005

   
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