857642-89-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857642-89-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,6,4 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 857642-89:
(8*8)+(7*5)+(6*7)+(5*6)+(4*4)+(3*2)+(2*8)+(1*9)=218
218 % 10 = 8
So 857642-89-8 is a valid CAS Registry Number.
857642-89-8Relevant academic research and scientific papers
A new approach to the preparation of 1,3,4-triarylpyrroles
De Zeng, Xing,Chen, Yi
, p. 490 - 492 (2007/10/03)
A class of 1,3,4-triaryl-2,5-dihydropyrroles were synthesized using the McMurry coupling reaction as the key step. The non-catalytic photoconversion of 1,3,4-triaryl-2,5-dihydropyrroles furnished 1,3,4-triarylpyrroles in good yields (63-89%). It was found
