233770-15-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 233770-15-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,3,7,7 and 0 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 233770-15:
(8*2)+(7*3)+(6*3)+(5*7)+(4*7)+(3*0)+(2*1)+(1*5)=125
125 % 10 = 5
So 233770-15-5 is a valid CAS Registry Number.
233770-15-5Relevant articles and documents
A general synthesis of 2-formyl-3-arylpyrroles
Franc, Cecile,Denonne, Frederic,Cuisinier, Claire,Ghosez, Leon
, p. 4555 - 4558 (1999)
2-Formyl-3-iodo-1-tosylpyrrole 2 has been prepared in four steps from cinnamaldehyde. It was coupled with a wide variety of arylboronic acids to give the corresponding biaryl compounds in high yields.
