55808-09-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55808-09-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,8,0 and 8 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 55808-09:
(7*5)+(6*5)+(5*8)+(4*0)+(3*8)+(2*0)+(1*9)=138
138 % 10 = 8
So 55808-09-8 is a valid CAS Registry Number.
55808-09-8Relevant academic research and scientific papers
A new and practical synthesis of tivozanib
Zhu, Chunping,Mao, Yongjun,Wang, Han,Xu, Jingli
, p. 1882 - 1887 (2016/11/06)
New and improved synthetic route of tivozanib is described on a hectogram scale. An reduction cyclization process to prepare the key intermediate 6,7-dimethoxyquinolin-4-ol from the 3-(dimethylamino)-1-(2-nitrophenyl)prop-2-en-1-one compound at H2/Ni cond