94317-93-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 94317-93-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,3,1 and 7 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 94317-93:
(7*9)+(6*4)+(5*3)+(4*1)+(3*7)+(2*9)+(1*3)=148
148 % 10 = 8
So 94317-93-8 is a valid CAS Registry Number.
94317-93-8Relevant articles and documents
IMROVED METHOD FOR SYNTHESIS OF SUBSTUTUTED TETRAPHENYLPORPHINS
Semeikin, A. S.,Koifman, O. I.,Berezin, B. D.
, p. 629 - 632 (2007/10/02)
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.
