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680-98-8

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680-98-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 680-98-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,8 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 680-98:
(5*6)+(4*8)+(3*0)+(2*9)+(1*8)=88
88 % 10 = 8
So 680-98-8 is a valid CAS Registry Number.

680-98-8Downstream Products

680-98-8Relevant articles and documents

REACTION OF KETOCARBOXYLIC ESTERS WITH SULFUR TETRAFLUORIDE IN ANHYDROUS HYDROGEN FLUORIDE

Bloshchitsa, F. A.,Burmakov, A. I.,Kunshenko, B. V.,Alekseeva, L. A.,Bel'ferman, A. L.,et al.

, p. 1260 - 1263 (2007/10/02)

The reaction of ketocarboxylic esters with sulfur tetrafluoride in anhydrous hydrogen fluoride at 20 deg C gives good yields of difluorocarboxylic esters.Hydrolysis of the latter gave the corresponding carboxylic acids.

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