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1421592-27-9

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1421592-27-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1421592-27-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,5,9 and 2 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1421592-27:
(9*1)+(8*4)+(7*2)+(6*1)+(5*5)+(4*9)+(3*2)+(2*2)+(1*7)=139
139 % 10 = 9
So 1421592-27-9 is a valid CAS Registry Number.

1421592-27-9Downstream Products

1421592-27-9Relevant articles and documents

Novel calix[4]arene-based receptors with bis-squaramide moieties for colorimetric sensing of anions via two different interaction modes

Jin, Can,Zhang, Man,Deng, Chao,Guan, Yangfan,Gong, Jun,Zhu, Dunru,Pan, Yi,Jiang, Juli,Wang, Leyong

, p. 796 - 801 (2013/04/10)

Novel calix[4]arene-based anion receptors 1-3 with bis-squaramide moieties were designed and synthesized. Their sensing properties with various anions were investigated by UV-vis, ESI-MS, and 1H NMR spectra. The experimental results revealed that there were two types of interaction modes where receptor 1 bound biologically important H2PO4-, F -, and AcO- ions selectively over other anions in the hydrogen bonding interaction mode, while receptors 2 and 3 displayed deprotonation behavior with basic anions (F-, AcO-, and H2PO4-) via acid-base interaction mode. Receptors 2 and 3 were proved to be efficient 'naked-eye' sensors for F - and AcO- with marked color changes.

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