To mesmerize the mesyl. Methane sulfonyl chloride. - C&EN Global

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With the fascinating powers Pennwalt's methane sulfonyl chloride (MSC) has, you can make the mesyl group react in many helpful ways. A unique non-oxidizing acid chloride, MSC (CH 3 S 0 2 CI) lets you attach the mesyl group to a lot of different kinds of molecules. Sulfon­ amides, sulfones and sulfenes are just a few of the intriguing c o m p o u n d s you can produce. The mesyl group which MSC contains is used in the synthesis of pesticides, pharma­ ceuticals, herbicides, photographic chemicals, oil-based coatings, dyes, and a wide range of other c o m p o u n d s . It also has γ^β M M i n t e r e s t i n g a p p l i c a t i o n s as a l ) ^ | U F "leaving group," where the mesyl ^ ^ • ••

structure is attached to form an intermediate, then later removed. MSC comes to you from the people who have a way of innovating organosulfurs, with a broad range of mercaptans, from C i to C 1 6 . If you're looking for a versatile easy-tohandle, non-viscous, non-oxidizing acid chloride for your catalyst applications, look at MSC. Send for our Bulletin S-104 on properties, reactions and applications of MSC. Write Organic Chemicals Division, Pennwalt Corporation, Three Parkway, Philadelphia, PA 19102. O r c a l l u s t o l l free at East Orange, NJ on 8 0 0 / JliUflkIT1 631-1233; or at Oak Brook, IL on Jrï^tjff! 800/323-7302. In western states, πΐ,-,ς call collect 415/574-5272.

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IN EUROPE: PENNWALT-HOLLAND B.V., WESTBLAAK 96, 3012 KM ROTTERDAM; TELEX 2 2 3 0 5 - T E L E P H O N E (010) 111640 IN JAPAN: PENNWALT JAPAN LTD., DAIICHI-CHUO BLDG., CHUO-KU, TOKYO; TELEX J26184-TELEPHONE (03) 271-2395

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