I get mine from Sigma Aldrich cat no 36,554-8. They call it Direct Red 80 in the catalogue, but the C.I. number is the same (35780). hope this helps. abigail -----Original Message----- From: Hesch, Pamela M. [mailto:Hesch.Pamela@mayo.edu] Sent: 04 December 2001 13:55 To: 'firstname.lastname@example.org' Subject: Sirius Red I am looking for any possibe source for Sirius Red. Any Ideas? Thanks ahead of time.