3°
F THE MORE
For a l a d y ' s l o v e . . • CH,OHCH(CHOH),CHNH,CHOH 1 O ' .HCl d-Glucosamine Hydrochloride (Eastman 664) is an amino sugar of importance in nutritional research, but there is one eminent biochemist to whom it is particularly important. He recently confided to us that many years ago he bought his wife her engagement ring with the proceeds derived from hydrolyzing with HCl the chitin from barrels of lobster shells, separating out and purifying the ^/-glucosamine hydrochloride, and selling it to us.
On being " P r a c t i c a l " . • .
THAN
3400
EASTMAN
ORGANIC
CHEMICALS
up with a true ortho isomer, we start from the highest quality o-cresol commercially available. On page 2 of our catalog we say that our "Practical" chemicals "are considered of sufficient purity for the usual laboratory synthesis." By that we mean that we want jyo// to find you can consider them so.
derivatives that locate said alcohols in chromatography columns. For another, with solid alcohols it forms sharply differentiated crystalline derivatives. It's particularly useful for distinguishing between the numerous tocopherols—a subject on which* the vitamin side of OPi has had a great deal of experience. Literature gladly supplied.
T o distinguish a l c o h o l s . . .
Don't forget, there are more than 3400 other organics available to you from Eastman. Chances are the ones you need are in our List No. 37. If you don't have a copy, there's one waiting for you at Distillation Products Industries, Eastman Organic Chemicals Department, Rochester 3 , N. Y. (Division of Eastman Kodak Company).
C 6 H 5 N:NC 6 H 4 C0C1 p-Phenylazobe7izoyl Chloride (Eastman 5 549) is a handy item to have on hand if you have much occasion to distinguish between higher"alcohols. It does double duty. For one thing, it adds on readily to alcohols to give characteristically colored
(CH3CCH40)3PO Tri-o-cresyl Phosphate (Eastman P15 17) carries our yellow "Practical" grade label, but we are not making it from ordinary commercial mixed cresols. In order to wind
V O L U M E S 9,
NO.
2 9
gp/
Eastman Organic Chemicals for science and industry
Also . . . vitamins A and E . . . distilled monoglycerides . . . high vacuum equipment
» » * » JULY
16,
1951
2903
