133689-49-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133689-49-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,6,8 and 9 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 133689-49:
(8*1)+(7*3)+(6*3)+(5*6)+(4*8)+(3*9)+(2*4)+(1*9)=153
153 % 10 = 3
So 133689-49-3 is a valid CAS Registry Number.
133689-49-3Relevant academic research and scientific papers
THE HANTZSCH SYNTHESIS WITH 5-AMINOURACILS: ONE STEP SYNTHESIS OF PYRIDOPYRIMIDINES
Kajino, Masahiro,Meguro, Kanji
, p. 2153 - 2161 (2007/10/02)
A one-step synthesis of new pyridopyrimidine derivatives (III) was achieved through the Hantzsch synthesis using 6-aminouracils (I) as enamine nucleophiles.
