Monji N, Castro A
Experientia. 1980 Mar 15;36(3):347-9. doi: 10.1007/BF01952319.
A new cortisol derivative, cortisol-21-m-maleimidobenzoate (CMB), was synthesized and conjugated with sulfhydryl groups of beta-galactosidase (BG). Both CMB-BG and CHS-BG conjugates have a high immunoreactivity to cortisol antibody, and although CHS-BG does not displace well with the added cortisol, CMB-BG does.