Merck has enough stable isotopes for practically anybody.
Including the people who want custom synthesis. With more t h a n fifteen years' experience, we keep almost 600 different isotopically labeled compounds ready to ship from stock. But maybe you're the exception with a requirement for custom
synthesis. That's another specialty of ours, and the most extensive available anywhere. In fact, the compound you w a n t may already have been synthesized, but not kept in stock merely because of limited demand.
And to all our other capabilities in isotopes, we add fast delivery and order-taking by telephone. Talk to your man from Merck about a product list and prices. Merck Chemical Division, Merck & Co., Inc., Rahway, N.J. 07065
We think you should expect something extra
MERCK
CIRCLE 1 13 O N READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 43, NO. 13, NOVEMBER 1971
·
21 A
