0000899140-01-500249 Sample Contracts

RECITALS

Standstill Agreement • September 4th, 2001 • Warburg Pincus Private Equity Viii L P • Pharmaceutical preparations • Delaware

• Contract Type
  Standstill Agreement
• Filed
  September 4th, 2001
• Company
  Warburg Pincus Private Equity Viii L P
• Industry
  Pharmaceutical preparations
• Jurisdiction
  Delaware

RECITALS

Rights Agreement • September 4th, 2001 • Warburg Pincus Private Equity Viii L P • Pharmaceutical preparations • Delaware

• Contract Type
  Rights Agreement
• Filed
  September 4th, 2001
• Company
  Warburg Pincus Private Equity Viii L P
• Industry
  Pharmaceutical preparations
• Jurisdiction
  Delaware

Exhibit 2 ---------

Purchase Agreement • September 4th, 2001 • Warburg Pincus Private Equity Viii L P • Pharmaceutical preparations • New York

• Contract Type
  Purchase Agreement
• Filed
  September 4th, 2001
• Company
  Warburg Pincus Private Equity Viii L P
• Industry
  Pharmaceutical preparations
• Jurisdiction
  New York

Joint Filing Agreement

Joint Filing Agreement • September 4th, 2001 • Warburg Pincus Private Equity Viii L P • Pharmaceutical preparations

• Contract Type
  Joint Filing Agreement
• Filed
  September 4th, 2001
• Company
  Warburg Pincus Private Equity Viii L P
• Industry
  Pharmaceutical preparations

The undersigned hereby agree that the statement on Schedule 13D filed by the undersigned with respect to the Common Stock of Triangle Pharmaceuticals, Inc. is, and any amendment thereto signed by each of the undersigned shall be, filed on behalf of each undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.