Disclosed are methods and pharmaceutical compositions for modulating one or more steroidal receptor activities. The methods typically utilize and the pharmaceutical compositions typically include one or more substituted phenyl aziridine precursors, their respective aziridines, analogs thereof, derivatives thereof, or pharmaceutically acceptable salts thereof such as CpdA. The methods and compositions may be used for treating diseases, disorders, and conditions associated with glucocorticoid receptor activity, androgen receptor activity, or both, such as cancers, acne vulgaris, and alopecia.