POWER OF ATTORNEY Exhibit 24 KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned officers and/or directors of Schering-Plough Corporation, a New Jersey corporation (herein called the "Corporation"), does hereby constitute and appoint William J. Silbey, Thomas H. Kelly and Benjamin Croce, or any of them, his or her true and lawful attorney or attorneys and agent or agents, to do any and all acts and things and to execute any and all instruments which said attorney or attorneys and agent or agents may deem necessary or advisable to enable the Corporation to comply with the Securities Exchange Act of 1934, as amended, and any rules, regulations, requirements or requests of the Securities and Exchange Commission thereunder or in respect thereof in connection with the filing under said Act of the Annual Report of the Corporation on Form 10-K for the fiscal year ended December 31, 1996 (herein called the "Form 10-K"); including specifically, but without limiting the generality of the foregoing, the power and authority to sign the respective names of the undersigned officers and/or directors as indicated below to the Form 10-K and/or to any amendment of the Form 10-K and each of the undersigned does hereby ratify and confirm all that said attorney or attorneys and agent or agents, or any of them, shall do or cause to be done by virtue hereof. IN WITNESS WHEREOF, each of the undersigned has subscribed these presents this 25th day of February, 1997. /s/Robert P. Luciano /s/Richard Jay Kogan Robert P. Luciano, Chairman; Richard Jay Kogan, President and Director Chief Executive Officer; Director /s/Jack L. Wyszomierski /s/Thomas H. Kelly Jack L. Wyszomierski, Thomas H. Kelly, Vice President Executive Vice President and and Controller; Principal Chief Financial Officer Accounting Officer /s/Hans W. Becherer /s/Richard de J. Osborne Hans W. Becherer, Director Richard de J. Osborne, Director /s/Hugh A. D'Andrade /s/Patricia F. Russo Hugh A. D'Andrade, Director Patricia F. Russo, Director /s/David C. Garfield /s/William A. Schreyer David C. Garfield, Director William A. Schreyer, Director /s/Regina E. Herzlinger /s/Robert F. W. van Oordt Regina E. Herzlinger, Robert F. W. van Oordt, Director Director /s/H. Barclay Morley /s/R. J. Ventres H. Barclay Morley, Director R. J. Ventres, Director /s/Carl E. Mundy, Jr. /s/James Wood Carl E. Mundy, Jr., Director James Wood, Director WD022003.FIL