Vitamin B-12 cobalt-57 and process
US4133951A · kind A · utility
5Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1976 |
| Grant date | Jan 9, 1979 |
| Priority date | — |
| Expiry date | Mar 17, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/60
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of making radioactively labelled vitamin B-12 by reacting .alpha.-(5,6-dimethylbenzimidazolyl)hydrogenobamide with cobaltous ion Co-57, or with another radioactive cobalt isotope. The method enables vitamin B-12 of high specific activity to be made, which is useful for in vitro and in vivo analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.