137906-28-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137906-28-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,9,0 and 6 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 137906-28:
(8*1)+(7*3)+(6*7)+(5*9)+(4*0)+(3*6)+(2*2)+(1*8)=146
146 % 10 = 6
So 137906-28-6 is a valid CAS Registry Number.
137906-28-6Relevant academic research and scientific papers
A Convenient Synthesis of Monofluorobutene Derivatives
Matsuo, Noritada,Kende, Andrew S.
, p. 3193 - 3195 (2007/10/02)
(Z)-1,4-Dibromo-1,1,2-trifluoro-2-butene (2a) reacts regioselectively with sodium benzenesulfinate and triethyl phosphite respectively to yield the (Z)-isomers of 3,4,4-trifluoro-4-bromo-2-butenyl phenyl sulfone (3) and diethyl (Z)-4-bromo-3,4,4-trifluoro