7-Oxo-1,2 ,3,3,8-pentamethyl-5-trifluoromethyl-2,3,7,8-tetrahydro-1-H-pyrrolo[3,2-g] q
US4026898A · kind A · utility
4Cited by
2References
3Claims
0Family size
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Key dates
| Filing date | Mar 4, 1976 |
| Grant date | May 31, 1977 |
| Priority date | — |
| Expiry date | Mar 4, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
7-Oxo-1,2,3,3,8-pentamethyl-5-trifluoromethyl-2,3,7,8-tetrahydro-1-H-pyrrol 3,2-g] quinoline, a new compound, useful as a blue-green laser dye, is prepared from a substituted indole. It has the expanded formula ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.