104669-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104669-56-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,6,6 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 104669-56:
(8*1)+(7*0)+(6*4)+(5*6)+(4*6)+(3*9)+(2*5)+(1*6)=129
129 % 10 = 9
So 104669-56-9 is a valid CAS Registry Number.
104669-56-9Relevant academic research and scientific papers
Lee, Dong Ung,Wiegrebe, Wolfgang
, p. 694 - 704 (1986)
1,2,3,4-Tetrahydro-6,7-dimethoxy-2-methylisoquinoline (1) is converted by ethyl chloroformate (ECF)/NaBH3CN to 2--4,5-dimethoxytoluene (4) via the quaternary urethane 2.The same procedure leads from laudanosine (5)