4-Methoxyestrone-1,2,16,16-d4

4-Methoxyestrone-1,2,16,16-d4 is a deuterated compound of 4-Methoxyestrone. 4-Methoxyestrone has a CAS number of 58562-33-7. 4-hydroxyestrone-4-methyl ether is the methylation of 4-OHE1, which is catalyzed by COMT.