cyren CY Cyclopentenylallyl Barbituric Acid Cyperus nutans var. eleusinoides Cyclotella cryptica var. ambigua cyclohexanediaminetetr aaceticacid Cycling Road Individual Time Trial Cyclotella striata var. mesoleia Cytokinin oxidase/dehydrogenase cyclopentadiene-menadione adduct cytosine arabinoside hydrochloride Cyanogens -contained waste water