1280135-99-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1280135-99-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,0,1,3 and 5 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1280135-99:
(9*1)+(8*2)+(7*8)+(6*0)+(5*1)+(4*3)+(3*5)+(2*9)+(1*9)=140
140 % 10 = 0
So 1280135-99-0 is a valid CAS Registry Number.
1280135-99-0Relevant articles and documents
Studies on the intermolecular hydroarylation of N-Ts- or N-Ac-protected indoles and 2,3-allenoates
Fang, Zhao,Fu, Chunling,Ma, Shengming
, p. 1227 - 1231 (2011)
An operationally simple, TFA-promoted regioselective hydroarylation reaction of 2,3-allenoates with N-Ts- or N-Ac-indoles to afford 4-indolyl-4-arylbut-2-enoates is described. A series of substrates was tested, and the E/Z selectivity was found to depend
