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217649-77-9

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217649-77-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 217649-77-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,6,4 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 217649-77:
(8*2)+(7*1)+(6*7)+(5*6)+(4*4)+(3*9)+(2*7)+(1*7)=159
159 % 10 = 9
So 217649-77-9 is a valid CAS Registry Number.

217649-77-9Relevant articles and documents

Method for synthesizing oxytetracycline and oxytetracycline phosphate (by machine translation)

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, (2020/04/22)

Step A product shown in Formula is obtained by dissolving, a product of: Formula I with a product shown by subjecting a product shown II in Formula to a reaction; to obtain a product having a hydroxyl: protection product II as shown in Formula I, and a ca

Synthesis, stereochemical assignment and biological activity of a novel series of C-4″ modified aza-macrolides

Bronk, Brian S.,Letavic, Michael A.,Bertsche, Camilla D.,George, David M.,Hayashi, Shigeru F.,Kamicker, Barbara J.,Kolosko, Nicole L.,Norcia, Laura J.,Rushing, Margaret A.,Santoro, Sheryl L.,Yang, Bingwei V.

, p. 1955 - 1958 (2007/10/03)

Modification of the cladinose C-4″ position via manipulation of the corresponding keto derivatives afforded two stereochemically pure series of compounds. The synthesis and structure determination of these compounds is described within. The in vitro and i

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