EXHIBIT 2 OFFER TO PURCHASE FOR CASH UP TO 3,000 UNITS OF LIMITED PARTNERSHIP INTEREST OF PAINEWEBBER R&D PARTNERS II, L.P. AT $6,000 NET PER UNIT BY PHARMAINVEST, L.L.C.Offer to Purchase • March 10th, 1999 • Bioroyalties LLC • Services-commercial physical & biological research
