A transaction under this chapter to which a business corporation is a party may not impair any right or obligation that a person has under, and may not make applicable or inapplicable to the corporation, any provision of section 2538 (relating to approval of transactions with interested shareholders) or 2539 (relating to adoption of plan of merger by board of directors) or Subchapters E (relating to control transactions), F (relating to business combinations), G (relating to control-share acquisitions), H (relating to disgorgement by certain controlling shareholders following attempts to acquire control), I (relating to severance compensation for employees terminated following certain control-share acquisitions) and J (relating to business combination transactions - labor contracts) of Chapter 25, nor shall it change the standard of care applicable to the directors under Subchapter B of Chapter 17 (relating to fiduciary duty) unless, in addition to the requirements of this chapter:
15 Pa.C.S. § 313