Bachelor of Science in Pharmacy, Jadavpur University, Calcutta, India, 1969. Master of Science, University Wisconsin, 1971. Doctor of Philosophy, University Wisconsin, 1973.
Master of Business Administration, Fairleigh Dickinson University, 1977.
Director pharmaceutical technical Bristol-Myers Squibb, New Brunswick, New Jersey, 1977-1995. Vice president technical affairs Mova Pharmaceutical Corporation, Cagaus, Puerto Rico, 1995. Vice president development Liposome Company, Plainsboro, New Jersey, 1995-1997.
Vice president technical operations Delsy's Pharmaceutical Corporation, Princeton, New Jersey, 1997—2001. Chief Executive Officer, president Chrai Associates, Inc., Cranbury, since 2001.
Active Boy Scouts American, New Jersey, since 1996. Fellow American Pharmaceutical Association, American Association Indian Pharmaceutical Scientists.
Married Jane M. Limpert. Children: Brian, Emily.