205523-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205523-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,5,2 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 205523-91:
(8*2)+(7*0)+(6*5)+(5*5)+(4*2)+(3*3)+(2*9)+(1*1)=107
107 % 10 = 7
So 205523-91-7 is a valid CAS Registry Number.
205523-91-7Relevant articles and documents
Synthesis of ardisinol II
Sun, Wei Yan,Zong, Qin,Gu, Rue Lin,Pan, Bai Chuan
, p. 1619 - 1622 (2007/10/03)
The first and also a concise synthesis of ardisinol II by two routes in excellent yields are described.