Cas 745819-23-2,C50H56N2O8

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Check Digit Verification of cas no

The CAS Registry Mumber 745819-23-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,5,8,1 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 745819-23:
(8*7)+(7*4)+(6*5)+(5*8)+(4*1)+(3*9)+(2*2)+(1*3)=192
192 % 10 = 2
So 745819-23-2 is a valid CAS Registry Number.

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745819-23-2Relevant academic research and scientific papers

Selective Mono-O-acylation of C2V-symmetrical calix[4]arenediols with acylisocyanates

Yakovenko, Anton V.,Boyko, Vyacheslav I.,Kushnir, Oleg V.,Tsymbal, Ivan F.,Lipkowski, Janusz,Shivanyuk, Alexander,Kalchenko, Vitaly I.

, p. 2769 - 2772 (2007/10/03)

Calix[4]arenedialkyl ethers 3 react with an excess of acylisocyanates to give selectively monoacylated products 4. Intramolecular hydrogen bonds and steric effects of the acylcarbamate fragments are most likely responsible for the high selectivity of this

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