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39728-57-9

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39728-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39728-57-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,7,2 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 39728-57:
(7*3)+(6*9)+(5*7)+(4*2)+(3*8)+(2*5)+(1*7)=159
159 % 10 = 9
So 39728-57-9 is a valid CAS Registry Number.

39728-57-9Downstream Products

39728-57-9Relevant articles and documents

KETONES AND METHOD FOR MANUFACTURING ANALOG THEREOF

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Paragraph 0081-0084, (2019/04/05)

PROBLEM TO BE SOLVED: To provide a technique for efficiently producing ketones by using cellulose after extracting chitin and chitosan extracted from the crustacean or sucrose from the beet in order to effectively using wastes, such as a crustacean or a beat to prepare a solid catalyst. SOLUTION: A method for manufacturing 1-phenyl-3-ketones and an analog (a compound 3) comprises using at least one kind selected from a group consisting of cellulose, chitin and chitosan as a carrier and reacting benzyl alcohols (a compound 1) with ketones (a compound 2) in the presence of a solid catalyst obtained by supporting a group 8-10 transition metal and a base. The following chemical formula 1 is shown. SELECTED DRAWING: None COPYRIGHT: (C)2019,JPOandINPIT

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