2,5-Bis-(4-Azido-2-sulfobenzylidene)- cyclopentanone, disodium salt, tetrahydrate

Secant Chemicals is the exclusive North American distributor for several specialty chemical and plant antibody manufacturers. An extensive array of products is available, including the company's original specialty - photoactive diazo chemicals for use in the printing, micro lithography and electronics industries.

Secant Chemicals Inc., 300 High Street, Box 246, Winchendon, MA 01475-0246. Tel: 978-297-3333; Fax: 978-297-1518.