"Process for purification of N-cyano-N'-methyl-N""-(2-((5-methyl-1Himidazol-4-yl)methylthio)ethyl)guan idine"
US4973703A · kind A · utility
5Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1988 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Nov 4, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D233/64
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the purification of N-cyano-N'-methyl-N"-[2-{(5-methyl-1H-imidazol-4-yl)methylthio}-ethyl]guan idine, which comprises bringing a crude product of N-cyano-N'-methyl-N"-[2-{(5-methyl-1H-imidazol-4-yl)-methylthio}ethyl]guan idine into contact with activated carbon in water in the presence of an organic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.