Abstract: A method for the production of allergenic extracts comprising the extraction of an allergenic substance with a suitable solvent having incorporated therein a small but effective amount of a compound of the formula, ##STR1## wherein Y is H or lower alkyl; Z is CH.sub.2 ; n is 0 or 1; R is alkylene or cycloalkylene; m is 0 or 1; W is CH.sub.2 ; and X is H, acyl or lower alkyl. The novel allergenic extracts produced by this process are also the subject of this invention.

Abstract: A method of reducing local adverse reactions which occur at the site of administration of parenterally administrable physiologically active compositions, to patients which comprises, prior to administration thereof, incorporating in said physiologically active compositions, a small but effective amount of a compound of the formulae, ##STR1## wherein n is an integer of from 1 to 6; R.sup.1 is H or lower alkyl; x is 0 or 1; each Y is H; and R is H, lower alkyl or acyl; and the non-toxic pharmaceutically acceptable salts thereof.

Abstract: The method of improving the storage stability of parenterally administerable physiologically active compositions which comprises, incorporating in said compositions a small but effective amount of a compound of the formulae, ##STR1## wherein R is H, lower alkyl or acyl; each R.sup.1 is H or lower alkyl; and n is an integer of from 1 to 6; x is 0 or 1; each Y is H; and the non-toxic pharmaceutically acceptable salts thereof.

Abstract: This invention relates to a method of binding antigenically active materials to the surface of water insoluble, hydrophobic polymeric substances which comprises pretreating the water-insoluble hydrophobic polymeric substance with an aldehyde of the formula, OHC--X--CHO, wherein X may be --CH.sub.2).sub.n, wherein n is an integer of from 1 to 10; cycloalkyl, for example, cyclopentyl, cyclohexyl; monocyclic aryl, for example, phenyl, and thereafter contacting the thus treated polymeric material with the purified antigenically active material to be bound thereto. The final products of this invention are employable as diagnostic products.

Abstract: Therapeutically treating horses suffering from tail and mane eczema by systemically administering to said horses a small but effective amount of allantoin.