220419-62-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220419-62-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,4,1 and 9 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 220419-62:
(8*2)+(7*2)+(6*0)+(5*4)+(4*1)+(3*9)+(2*6)+(1*2)=95
95 % 10 = 5
So 220419-62-5 is a valid CAS Registry Number.
220419-62-5Relevant academic research and scientific papers
A mild method for the preparation of 8-substituted xanthines from 5,6- diaminouracils
De Araujo, Aline D.,Bacher, Edmond,Joachim Demnitz,Santos, Douglas A.
, p. 29 - 36 (2007/10/03)
The Schiff base derivatives (3), prepared from the respective 5,6- diaminouracil (1) and aldehydes can be mildly oxidatively cyclized with m- CPBA in MeCN to afford C-8 substituted xanthines (6).
