204142-34-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204142-34-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,1,4 and 2 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 204142-34:
(8*2)+(7*0)+(6*4)+(5*1)+(4*4)+(3*2)+(2*3)+(1*4)=77
77 % 10 = 7
So 204142-34-7 is a valid CAS Registry Number.
204142-34-7Relevant academic research and scientific papers
Hay,Denny
, p. 463 - 470 (1998)
A practical and high yielding synthesis of 2-methoxy-7,8,9,10-tetrahydrophenanthridine suitable for large-scale preparation is described.
