Steroid derivatives and their use in radioimmunoassays
US4221725A · kind A · utility
5Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1979 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Jan 17, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J71/0005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Radiolabeled steroid derivatives having the formula ##STR1## wherein St is des-hydroxy steroid moiety of (i) a hydroxy steroid intended for radioimmunoassay or (ii) a hydroxy containing derivative of a steroid intended for radioimmunoassay, said derivative having a strong affinity for the antibodies of the steroid intended for radioimmunoassay; R is hydrogen or alkyl of 1 to 3 carbon atoms; n is 0, 1, 2, 3 or 4 and the asterisk (*) indicates tagging with a radioisotope, are useful as tracers in radioimmunoassays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.