following hydrolysis of the conjugates , purification of the free neutral steroids on thin-layer chromatography , derivatisation and gas chromatographic-mass spectrometric analysis , the presence of the major metabolites , estrane-3,17 alpha-diol in the glucuronic acid fraction and 19-nortestosterone and two isomers of estrane-3,17-diol in the sulphate fraction , could be confirmed for 17-18 days after administration of nandrolin ( 19-nortestosterone phenylpropionate ) .
C0038317
steroids
C0014924
estrane