EXHIBIT 5.2

                     SKADDEN, ARPS, SLATE, MEAGHER & FLOM
                               919 Third Avenue
                           New York, NY  10022-3897
                                   -----
                               (212) 735-3999
                          Fax: (212) 735-2000





                                               June 30, 1997



Schering-Plough Corporation
One Giralda Farms
P.O. Box 1000
Madison, New Jersey  07940-1000

Dear Sirs:

     We have acted as counsel for Schering-Plough 
Corporation, a New Jersey corporation (the "Company"), in 
connection with certain federal income tax issues relating to 
transferable options ("Options") to acquire shares of Common 
Stock, par value $1.00 per share (the "Common Stock"), of the 
Company, which Options have been or may be granted in 
accordance with the terms of the Schering-Plough Corporation 
1997 Stock Incentive Plan (the "Plan").  It is expected that 
an aggregate of 5,000,000 shares of Common Stock which may be 
acquired by transferees upon exercise of the Options will be 
registered with the Securities and Exchange Commission in 
June, 1997, pursuant to a filing under the Securities Act of 
1933, as amended, of a Registration Statement on Form S-3 
(the "Registration Statement").  In connection with this 
opinion, we have examined the Plan, the "Federal Income Tax 
Consequences" section of the prospectus (the "Prospectus") 
relating to the Registration Statement, and such other 
documents as we have deemed necessary or appropriate.

     Based on the foregoing, we advise you that, in our 
opinion, under current law, the discussion set forth under 
the heading "Federal Income Tax Consequences" in the 
Prospectus, although general in nature, is an accurate 
summary of certain federal income tax consequences related to 
Options which have been transferred under the Plan.

     We consent to the filing of this opinion as an exhibit 
to the Registration Statement and to the use of our name 
wherever appearing in the Registration Statement and any 
amendment thereto.

                                        Very truly yours,


                                    /s/ Skadden, Arps, Slate,
                                        Meagher & Flom LLP