136649-70-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136649-70-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,6,4 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 136649-70:
(8*1)+(7*3)+(6*6)+(5*6)+(4*4)+(3*9)+(2*7)+(1*0)=152
152 % 10 = 2
So 136649-70-2 is a valid CAS Registry Number.
136649-70-2Relevant articles and documents
Fluorination of Chlorinated Trifluoromethyl Ethers
Sekiya, Akira,Ueda, Kunimasa
, p. 1421 - 1424 (2007/10/02)
Chlorine atoms in the chlorinated trifluoromethyl ether prepared from the reaction between chlorinated ethylenes and trifluoromethyl hypofluorite were fluorinated directly by fluorine gas.Tin(II) fluoride/sodium fluoride system was effective in the fluorination.