| Of these the catechins are the most typical, and have been considered as the parent substances of the catechol tans. |
| The industrial uses of catechol do not result in exposure to the general population. |
| Similarly, the peroxidase activity was assayed from the oxidation of catechol by H 2 O 2 in presence of the extract. |
| Like all catechol tans, the resulting leather darkens on exposure to sunlight. |
| So the problem was how to change this catechol without affecting the drug's ability to interact at the receptor. |
| Because of the tanning effect of catechol on emulsion gelatine, it has many of the properties of pyrogallol, including high acutance and low fog. |
