56797-61-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56797-61-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,7,9 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 56797-61:
(7*5)+(6*6)+(5*7)+(4*9)+(3*7)+(2*6)+(1*1)=176
176 % 10 = 6
So 56797-61-6 is a valid CAS Registry Number.
56797-61-6Relevant articles and documents
IMROVED METHOD FOR SYNTHESIS OF SUBSTUTUTED TETRAPHENYLPORPHINS
Semeikin, A. S.,Koifman, O. I.,Berezin, B. D.
, p. 629 - 632 (1986)
Condensation of pyrrole with benzaldehydes in a mixture of xylene and chloroacetic acid gives a series of substituted tetraphenylporphins with yields exeeding the yields of porphyrins synthetized according to known preparative methods.
