Results: Gastric ulcers induced by acetic acid visually healed within 30 days.

Afterwards pour in the acetic acid, and keep the mixture near 100°C.

The original residue is dissolved in muriatic or acetic acid and filtered.

An acetic acid concentration-dependent rate of dissociation of reduced half-molecules was observed.

On solution in glacial acetic acid and addition of nitric acid, b-nitroalizarin