(inorganic chemistry) HIO₄ or H₅IO₆, the oxyacids of iodine in which iodine has the highest oxidation number; H₅IO₆ is a white crystalline substance (HIO₄ is not stable), and both are strong oxidizing agents.

(organic chemistry) A very-long-chain saturated fatty acid, CH₃(CH₂)₂₄COOH, found in beeswax and carnauba wax.

(inorganic chemistry) A corrosive colourless liquid, HBrO₃; it is a powerful oxidizing agent, and is used in the manufacture of pharmaceuticals and some dyes; it reacts with bases to form bromates.

(organic chemistry) 2-methyl-propanoic acid, (CH₃)₂CHCOOH, an isomer of butyric acid, that occurs in carob beans and croton oil.

(chemistry) a strong acid, HClO₃, known only in solution and as its chlorate salts; a powerful oxidizing agent

(organic chemistry) A fatty acid, CH₃(CH₂)₆COOH, obtained from butter and other animal fats, and used in the manufacture of perfumes and flavours.

(organic chemistry) Either of the two isomeric carboxylic acids, normal butyric acid and isobutyric acid, with the chemical formula C₃H₇COOH, occurring in animal milk fat.

(chemistry) Any compound, of general formula HXⁿ⁺, which can be transformed into a conjugate base X⁽ⁿ⁻¹⁾⁺ by the loss of a proton.

(organic chemistry) An unsaturated organic acid, CH₃-CH=C(CH₃-COOH), found in angelica and having pharmacological uses; the trans- form is tiglic acid.

(organic chemistry) A long chain unsaturated fatty acid, CH₃(CH₂)₇CH=CH(CH₂)₁₁COOH, found in rapeseed and mustard seed oils; the cis- isomer is erucic acid, the trans- isomer is brassidic acid