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636567-56-1

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636567-56-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 636567-56-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,6,5,6 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 636567-56:
(8*6)+(7*3)+(6*6)+(5*5)+(4*6)+(3*7)+(2*5)+(1*6)=191
191 % 10 = 1
So 636567-56-1 is a valid CAS Registry Number.

636567-56-1Relevant articles and documents

Convenient synthesis of 2-substituted indoles from 2-ethynylanilines with tetrabutylammonium fluoride

Yasuhara, Akito,Kanamori, Yuichi,Kaneko, Masashi,Numata, Atsushi,Kondo, Yoshinori,Sakamoto, Takao

, p. 529 - 534 (2007/10/03)

The cyclization reaction of various 2-ethynylanilines, which were easily synthesized from 2-haloanilines by the palladium-catalyzed reaction with terminal alkynes, with tetrabutylammonium fluoride (TBAF) to yield 2-substituted indoles proceeded at refluxing or room temperature in THF in excellent yields without affecting the bromo, chloro, cyano, ethoxycarbonyl, and ethynyl groups.

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