1129540-19-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1129540-19-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,2,9,5,4 and 0 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1129540-19:
(9*1)+(8*1)+(7*2)+(6*9)+(5*5)+(4*4)+(3*0)+(2*1)+(1*9)=137
137 % 10 = 7
So 1129540-19-7 is a valid CAS Registry Number.
1129540-19-7Relevant academic research and scientific papers
Synthesis of tri- and tetraynes using a butadiynyl synthon
Azyat, Khalid,Jahnke, Eike,Rankin, Trent,Tykwinski, Rik R.
supporting information; experimental part, p. 433 - 435 (2009/05/06)
Using a one-pot protocol, triynes and tetraynes are formed from the reaction of a dibromovinyl triflate and a terminal alkyne under palladium-catalyzed cross-coupling conditions. The Royal Society of Chemistry.
