Hymenostomatida. Hymenostomatidas . An order of ciliate protozoa. Characteristics include a ventral oral area and a well-defined buccal cavity. It comprises three suborders: TETRAHYMENINA, Ophryoglenina, and PENICULINA. . 0.59
Hymecromone. 4-Methylumbelliferone . 7-Hydroxy-4-methyl-coumarin . Cholestil . Mendiaxon . 4 Methylumbelliferone . 7 Hydroxy 4 methyl coumarin . Imecromone . Methylumbelliferone . Resocyanine . A coumarin derivative possessing properties as a spasmolytic, choleretic and light-protective agent. It is also used in ANALYTICAL CHEMISTRY TECHNIQUES for the determination of NITRIC ACID. . 0.59