131271-49-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131271-49-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,2,7 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 131271-49:
(8*1)+(7*3)+(6*1)+(5*2)+(4*7)+(3*1)+(2*4)+(1*9)=93
93 % 10 = 3
So 131271-49-3 is a valid CAS Registry Number.
131271-49-3Relevant academic research and scientific papers
Synthesis of Three Phenolic Pent-1-en-4-ynes
Drewes, Siegfried E.,Emslie, Neville D.,Hemingway, Maxine
, p. 1671 - 1679 (2007/10/02)
Three novel pent-1-en-4-ynes 3, 4 and 5, analogues of the naturally-occurring rooperol 2, have been synthesized.The procedure involves initial protection of the phenolic groups as allyl ethers followed by deprotection with Wilkinson's catalyst.
