Physiologically active substance P-23924, its production and use
USRE34414E · kind E · reissue
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12Claims
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Key dates
| Filing date | Apr 22, 1991 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Apr 22, 2011 |
Classification
- Technology area (CPC —)General
Abstract
The compound of the formula: ##STR1## wherein R.sub.1 is hydrogen, methyl or hydroxymethyl, R.sub.2 is hydrogen or methoxy, R.sub.3 is hydroxy or methoxy, and R.sub.4 is hydrogen or a group ##STR2## is novel, and the compound is of use as inhibitors of animal tissue fibrosis, or biochemical reagents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.