Schering-Plough Corporation and Subsidiaries Subsidiaries of Registrant Exhibit 21 As of December 31, 1995 Page 1 of 3 State or Country of Incorporation Subsidiaries of Registrant or Organization AESCA Chemisch-Pharmazeutische Fabrik GmbH Austria American Image Productions, Inc. Tennessee American Scientific Laboratories, Inc. Delaware Beneficiadora e Industrializadora, S.A. de C.V. Mexico Cacene, C.A. Venezuela Calzado Confort C.A. Venezuela Casacen, C.A. Venezuela Chemibiotic (Ireland) Ltd. Ireland Dashtag United Kingdom Desarrollos Farmaceuticos y Cosmeticos S.A. Spain DNAX Research Institute of Molecular and Cellular Biology, Inc. California Douglas Industries Inc. Delaware Dr. Scholl's Foot Comfort Shops, Inc. Delaware Essex Chemie A.G. Switzerland Essex Farmaceutica, S.A. Colombia Essex Quimica Industria E Comercio S.A. Brazil Essex Pharma GmbH Germany Essex Pharma S.A. Greece EssexFarm S.A. Ecuador Farmaceutica Essex S.A. Spain Fulford (India) Limited India Garden Insurance Company Ltd. Bermuda Industria Quimica e Farmaceutica Schering-Plough S.A. Brazil Industrias Arco, Ltda. Costa Rica Integrated Disease Management, Inc. Delaware Integrated Therapeutics Group, Inc. Delaware Key Pharma A.G. Switzerland Key Pharmaceuticals Export Co., Inc. U.S. Virgin Islands Key Pharmaceuticals, Inc. Florida Kirby-Warrick Pharmaceuticals Limited United Kingdom Laboratorios Essex S.A. Argentina Loftus Bryan Chemicals Ltd. Ireland Med-Nim (Proprietary) Limited South Africa Ortopedia Nacional de Venezuela C.A. Venezuela PPL, Inc. Tennessee P.T. Schering-Plough Indonesia Indonesia Pharmaceutical Supply Corporation Delaware Pharmaco (Canada) Ltd. Canada Pharmaco, Inc. Delaware Plough (Australia) Pty. Limited Australia Plough Benelux S.A. Belgium Plough Broadcasting Company, Inc. Delaware Plough Chile Ltda. Chile Plough Consumer Products (Asia) Ltd. Hong Kong Plough Consumer Products (Philippines) Inc. Philippines Plough de Venezuela, C.A. Venezuela Plough Export, Inc. Tennessee Plough France France Plough (Hellas) Ltd. Greece Exhibit 21 Page 2 of 3 State or Country of Incorporation Subsidiaries of Registrant or Organization Plough Laboratories, Inc. Tennessee Plough Services A.G. Switzerland Plough, S.p.A. Italy Plough (UK) Limited United Kingdom Plough/OTC Farma Lda. Portugal Pro Medica AB Sweden Professional Pharmaceutical Corporation Delaware Professional Vaccine Corporation Delaware S.C.A. - Stabilimenti Chimici dell'Adda, S.p.A. Italy S-P RIL Limited United Kingdom SBI - Distribuidora de Productos Farmaceuticos Ltda. Brazil Scheramex, S.A. de C.V. Mexico Scherico Ltd. Switzerland Schering Biotech Corporation Delaware Schering Canada, Inc. Canada Schering Corporation New Jersey Schering Institutional Sales Corporation Delaware Schering Laboratories Advertising Inc. Delaware Schering Sales Corporation Delaware Schering Transamerica Corporation New Jersey Schering-Plough France Schering-Plough AB Sweden Schering-Plough A/S Denmark Schering-Plough A/S Norway Schering-Plough B.V. Netherlands Schering-Plough, C.A. Venezuela Schering-Plough N.V./S.A. Belgium Schering-Plough OY Finland Schering-Plough S.A. Argentina Schering-Plough S.A. Colombia Schering-Plough S.A. Panama Schering-Plough S.A. Spain Schering-Plough S.A. Uruguay Schering-Plough, S.A. de C.V. Mexico Schering-Plough S.p.A. Italy Schering-Plough Animal Health Corporation Delaware Schering-Plough Central East A.G. Switzerland Schering-Plough China Limited Bermuda Schering-Plough Compania Limitada Chile Schering-Plough Coordination Center N.V./S.A. Belgium Schering-Plough Corporation Philippines Schering-Plough South Korea Schering-Plough Corporation, U.S.A. Delaware Schering-Plough del Caribe, Inc. New Jersey Schering-Plough del Ecuador, S.A. Ecuador Schering-Plough Farma, Lda Portugal Schering-Plough (Grenada) Limited Grenada Schering-Plough HealthCare Holding Company Delaware Schering-Plough HealthCare Products Advertising Corporation Tennessee Schering-Plough HealthCare Products Canada, Inc. Canada Exhibit 21 Page 3 of 3 State or Country of Incorporation Subsidiaries of Registrant or Organization Schering-Plough HealthCare Products, Inc. Delaware Schering-Plough HealthCare Products Sales Corporation California Schering-Plough Holdings Ltd. United Kingdom Schering-Plough INT Limited United Kingdom Schering-Plough (India) Limited India Schering-Plough International, Inc. Delaware Schering-Plough Investment Co., Inc. Delaware Schering-Plough Investments Limited Delaware Schering-Plough Kabushiki Kaisha Japan Schering-Plough Labo N.V. Belgium Schering-Plough Limited Iran Schering-Plough Limited Taiwan Schering-Plough Limited Thailand Schering-Plough Limited United Kingdom Schering-Plough Ltd. Switzerland Schering-Plough Overseas Limited Delaware Schering-Plough Pharmaceutical Industrial and Commercial S.A. Greece Schering-Plough Products, Inc. Delaware Schering-Plough Pty Ltd. South Africa Schering-Plough Pty Limited Australia Schering-Plough Real Estate Co., Inc. Delaware Schering-Plough Research Institute Delaware Schering-Plough Sante Animale France Schering-Plough Sdn. Bhd. Malaysia Schering-Plough Tibbi Urunler Ticaret A.S. Turkey Sentipharm A.G. Switzerland Sentipharm Hong Kong Ltd. Hong Kong Shanghai Schering-Plough Pharmaceutical Company Ltd. China SOL Limited Bermuda SP HealthCare Products Corporation Delaware SUNTAN Sensations, Inc. California Technobiotic Limited Australia The Coppertone Corporation Florida W-J Liquidating Corp. Delaware W-J Manufacturing Corporation Delaware Warrick Pharmaceuticals Corporation Delaware Warrick Pharmaceuticals Limited United Kingdom Werthenstein Chemie A.G. Switzerland White Laboratories, Inc. New Jersey White Laboratories Ltd. United Kingdom White Laboratories of Canada Limited Canada