98648-28-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 98648-28-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,6,4 and 8 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 98648-28:
(7*9)+(6*8)+(5*6)+(4*4)+(3*8)+(2*2)+(1*8)=193
193 % 10 = 3
So 98648-28-3 is a valid CAS Registry Number.
98648-28-3Relevant articles and documents
Some New Aspects Related to the Synthesis of meso-Substituted Porphyrins
Gonsalves, A. M. d'A.,Varejao, Jorge M. T. B.,Pereira, Mariette M.
, p. 635 - 640 (2007/10/02)
A general analysis of the steps of the Rothemund reaction, allowed for a better understanding and a significant improvement of this reaction as a synthetic method in some of the previously known difficult syntheses.
