1138334-92-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1138334-92-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,8,3,3 and 4 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1138334-92:
(9*1)+(8*1)+(7*3)+(6*8)+(5*3)+(4*3)+(3*4)+(2*9)+(1*2)=145
145 % 10 = 5
So 1138334-92-5 is a valid CAS Registry Number.
1138334-92-5Relevant articles and documents
Triflic acid mediated dealkylative lactonisation via NMR-observable alkyloxonium intermediates
Munoz, M. Paz,Lloyd-Jones, Guy C.
experimental part, p. 516 - 524 (2009/07/19)
Trifluoromethanesulfonic acid (TfOH) efficiently induces the dealkylative cyclisation of pent-4-enoates to generate γ-lac-tones with high selectivity. For primary alkyl esters bearing an additional alkene, only monolactonisation occurs, even in the presen
