Abstract: L-2-amino-4-(2-aminoethoxy)-butanoic acid, methods for its preparation and novel intermediates employed in these processes are disclosed. L-2-amino-4-(2-aminoethoxy)-butanoic acid enhances ethylene production in fruit and therefore has utility as a ripening agent and as an abscission agent.

Abstract: Derivatives of antibiotic X-537A of the formulaWherein R.sub.1 is selected from the group consisting of hydrogen, lower alkyl, phenyl, and phenyl substituted by a member of the group consisting of halogen, nitro, and lower alkyl; R.sub.2 is selected from the group consisting of hydrogen, lower alkyl, lower alkanoyl, ##SPC1##benzoyl, and benzoyl substituted by a member of the group consisting of halogen, nitro and lower alkyl; R.sub.5 is selected from the group consisting of phenylazo and phenylazo substituted by a member of the group consisting of halogen, nitro, lower alkyl and lower alkoxy; and R.sub.4 is selected from the group consisting of --OH, =O, and =N--OHand the pharmaceutically acceptable alkali metal, alkaline earth metal and ammonium salts thereof, together with methods for their preparation are disclosed. These derivatives are useful as coccidiostatic agents and antibacterial agents.

Abstract: Compound of the formula ##STR1## where R.sub.1 is hydrogen, lower alkyl, phenyl, or phenyl substituted by halogen, nitro or lower alkyl; R.sub.2 is hydrogen; lower alkyl; lower alkanoyl; benzoyl; benzoyl substituted by halogen, nitro or lower alkyl; or R.sub.3 is hydrogen, halogen; nitro, amino, loweralkylamido or lower alkylamino; R.sub.4 is --OH, =O or =NOH which compound is useful as a coccidiostatic agent and as an anti-bacterial agent.