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667904-41-8

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667904-41-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 667904-41-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,9,0 and 4 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 667904-41:
(8*6)+(7*6)+(6*7)+(5*9)+(4*0)+(3*4)+(2*4)+(1*1)=198
198 % 10 = 8
So 667904-41-8 is a valid CAS Registry Number.

667904-41-8Downstream Products

667904-41-8Relevant articles and documents

Microwave-assisted synthesis of new spiro[indoline-3,4'-quinoline] derivatives via a one-pot multicomponent reaction

Zhu, Song-Lei,Zhao, Kai,Su, Xiao-Ming,Ji, Shun-Jun

experimental part, p. 1355 - 1366 (2009/10/09)

A simple and efficient synthesis of spiro[indoline-3,4'-quinoline] derivatives by a one-pot reaction of isatin, malononitrile, and enaminone under microwave irradiation was investigated. This protocol has the advantages of short reaction time, high yields

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