444336-13-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 444336-13-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,4,3,3 and 6 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 444336-13:
(8*4)+(7*4)+(6*4)+(5*3)+(4*3)+(3*6)+(2*1)+(1*3)=134
134 % 10 = 4
So 444336-13-4 is a valid CAS Registry Number.
444336-13-4Relevant academic research and scientific papers
Synthesis of alkynylbenzo-15-crown-5 ethers
Klyatskaya,Tret'yakov,Vasilevsky
, p. 1720 - 1722 (2007/10/03)
Reactions of 4′-iodobenzo-15-crown-5 ether with ethynylarenes or 4′-ethynylbenzo-15-crown-5 ether with haloarenes in the presence of catalytic amounts of PdII complex salts, CuI, and Et3N gave 4′-(arylethynyl)benzo-15-crown-5 ethers
