methyl (redirected from methyl red test)

methyl /meth·yl/ (meth´il) the chemical group or radical CH3—.

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methyl methacrylate  a methyl ester of methacrylic acid, which polymerizes to form polymethyl methacrylate; used in the manufacture of acrylic resins and plastics.

methyl salicylate  a volatile oil with a characteristic wintergreen odor and taste; used as a flavoring agent and as a topical counterirritant for muscle pain.

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meth·yl (mthl)

n.

The alkyl group, often a univalent radical, CH₃, derived from methane and occurring in many important organic compounds.

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methyl (Me)

[meth′il]

the chemical radical CH₃.

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methyl [meth´il]

the chemical group or radical -CH₃.

methyl salicylate a natural or synthetic oil with a characteristic wintergreen odor and taste; used as a counterirritant in ointments or liniments for muscle pain and also as a flavoring agent. Called also wintergreen oil.

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methyl

the monovalent radical, −CH₃.

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methyl alcohol

see methyl alcohol.

methyl bromide

a soil and grain fumigant. Poisoning by this compound causes incoordination and somnolence. Called also bromoethane.

methyl carbamate

see propoxur.

methyl demeton

an organophosphorus insecticide. Called also methyl systox, oxydemeton-methyl.

methyl harmane (3-methyl)

carboline toxin found in plants.

methyl hydroxybenzoate

see methylparaben.

methyl p-hydroxybenzoate

a sex pheromone in the vaginal secretions of the bitch in estrus; it stimulates mounting behavior in dogs.

methyl orange

an orange-yellow aniline dye, used as an indicator with a pH range of 3.2-4.4 and a color change from pink to yellow.

methyl parathion

a very toxic organophosphorus insecticide.

methyl red test

a biochemical test for identification of enterobacteria.

methyl salicylate

a natural or synthetic wintergreen oil, used as a topical analgesic and as a clearing agent when mounting parasites. Called also oil of sweet birch.

methyl systox

see methyl demeton (above).