imported from urea A monocarboxylic acid amide that has formula CH4N2O. urea peptide Amide derived from two or more amino carboxylic acid molecules (the same or different) by formation of a covalent bond from the carbonyl carbon of one to the nitrogen atom of another with formal loss of water. The term is usually applied to structures formed from alpha-amino acids, but it includes those derived from any amino carboxylic acid. peptide formaldehyde An aldehyde that has formula CH2O. formaldehyde streptomycin A streptomycin that has formula C21H39N7O12. streptomycin lactose A glycosylglucose that has formula C12H22O11. lactose gentamycins Any of a group of aminoglycoside antibiotics produced by fermentation of some Micromonospora spp. gentamycins sucrose A glycosyl glycoside that has formula C12H22O11. sucrose molecular entity Any constitutionally or isotopically distinct atom, molecule, ion, ion pair, radical, radical ion, complex, conformer etc., identifiable as a separately distinguishable entity. molecular entity aspartame A dipeptide that has formula C14H18N2O5. aspartame aluminium hydroxide An aluminium hydroxide that has formula H3AlO3. aluminium hydroxide neomycin neomycin dextran A (1->6)-alpha-D-glucan which has extra branching consisting of (1->2), (1->3) or (1->4) linkages. dextran thimerosal An alkylmercury compound that has formula C9H9HgO2S.Na. thimerosal