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93877-23-7

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93877-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 93877-23-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,8,7 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 93877-23:
(7*9)+(6*3)+(5*8)+(4*7)+(3*7)+(2*2)+(1*3)=177
177 % 10 = 7
So 93877-23-7 is a valid CAS Registry Number.

93877-23-7Relevant articles and documents

A straightforward synthesis of pyrazolines and pyrazoles: Palladium-catalyzed carbonylative vinylation-cyclocondensation reactions of aryl halides

Wu, Xiao-Feng,Neumann, Helfried,Beller, Matthias

experimental part, p. 4919 - 4924 (2011/10/31)

A novel consecutive one-pot synthesis of pyrazolines and pyrazoles starting from simple aryl halides, styrenes, carbon monoxide, and hydrazines has been established. Palladium-catalyzed carbonylative vinylation of aryl halides gave the corresponding chalcones, which are trapped in situ by addition of hydrazines.

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