134219-67-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134219-67-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,2,1 and 9 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 134219-67:
(8*1)+(7*3)+(6*4)+(5*2)+(4*1)+(3*9)+(2*6)+(1*7)=113
113 % 10 = 3
So 134219-67-3 is a valid CAS Registry Number.
134219-67-3Relevant articles and documents
Trifluoroacetylation of ketone O-vinyloximes
Vasil'tsov,Shmidt,Mikhaleva,Zaitsev,Tarasova,Afonin,Toryashinova,Il'icheva,Trofimov
, p. 334 - 338 (2007/10/03)
Ketone oxime O-vinyl ethers having alkyl or phenyl radicals react with trifluoroacetic anhydride in ether in the presence of pyridine, yielding 43-54% of the corresponding ketone oxime O-(trans-4,4,4-trifluoro-3-oxo-1-butenyl) ethers with high stereoselec
