161643-97-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161643-97-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,6,4 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 161643-97:
(8*1)+(7*6)+(6*1)+(5*6)+(4*4)+(3*3)+(2*9)+(1*7)=136
136 % 10 = 6
So 161643-97-6 is a valid CAS Registry Number.
161643-97-6Relevant articles and documents
[4+2] cycloaddition reaction of 3-hydrazono-1,1,1-trifluoro-2-alkanones to 4,5-bis(trifluoromethyl) pyridazines
Kamitori, Yasuhiro
, p. 1065 - 1074 (2007/10/03)
Mechanisms for the reaction of 3-hydrazono-1,1,1-trifluoro-2-alkanons (1) to 4,5-bis(trifluoromethyl)pyridazines (2) in the presence of TFA are discussed on the basis of the 6-3iG*level ab initio calculations. The results indicate a concerted [4+2] cycloa
