Halitunal, an unusual diterpene aldehyde from the marine alga .

Halituna(1), a novel diterpene aldehyde possessing a unique cyclopentadieno[c]pyran ring system, has been isolated from the marine alga . The structure of 1 was elucidated by spectroscopic techniques. Halitunal shows antiviral activity against murine coronavirus A59 in-vitro.

A nondisposable microplate for use with organic solvents.

A nondisposable, or "hard", multiwell microplate is described for use with small volumes of biological solutions containing organic solvents. The design of this teflon-coated, aluminum device resembles the 96-well layout of the disposable variety of tissue culture microplates. The reusable, hard microplate has been specifically developed to hold and evaporate volatile organic solvents from aliquots of crude sample extractions or partitions intended for testing in various in vitro biological screening assays.