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144381-57-7

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144381-57-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144381-57-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,3,8 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 144381-57:
(8*1)+(7*4)+(6*4)+(5*3)+(4*8)+(3*1)+(2*5)+(1*7)=127
127 % 10 = 7
So 144381-57-7 is a valid CAS Registry Number.

144381-57-7Downstream Products

144381-57-7Relevant articles and documents

Synthesis of Lipophilic Crown Ethers with Pendant Phosphonic Acid or Phosphonic Acid Monoethyl Ester Groups

Czech, Bronislaw P.,Desai, Dhimant H.,Koszuk, Jacek,Czech, Anna,Babb, David A.,at al.

, p. 867 - 875 (2007/10/02)

Synthetic routes to fifteen lipophilic crown ether phosphonic acid monoethyl esters and nine lipophilic crown ether phosphonic acids are described.For both classes of crown ethers which have pendant, proton-ionizable groups, the crown ether ring sizes are

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