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54533-67-4

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54533-67-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54533-67-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,5,3 and 3 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 54533-67:
(7*5)+(6*4)+(5*5)+(4*3)+(3*3)+(2*6)+(1*7)=124
124 % 10 = 4
So 54533-67-4 is a valid CAS Registry Number.

54533-67-4Relevant articles and documents

Synthesis and spectroscopic properties of new bis-tetrazoles

Pazik, Agnieszka,Skwierawska, Anna

, p. 83 - 94 (2014/01/06)

Syntheses of N,N′-phenyltetrazole podands link with aliphatic chains containing oxygen, nitrogen and sulphur atoms, are described. The complexing properties of these compounds towards metal cations (Fe2+, Cu 2+, Zn2+, Co2+, Ni2+) were investigated by absorption and infrared spectroscopy. The UV-Vis titrations were performed to estimate the stability constant values of the respective complexes with Cu2+ ion. Changes in UV-Vis absorption spectra and IR spectra of compound 6 under various concentrations of Cu2+ ion in methanol suggest formation of very unstable complex. The structure of ligand 2 has been deduced by X-ray crystallography. The Author(s) 2012.

SYNTHESIS OF MACROHETEROCYCLES - ANALOGS OF DIBENZO-CROWN COMPOUNDS. 2. 18-MEMBERED DIOXADIAZA-CROWN COMPOUNDS

Formanovskii, A. A.,Mikhura, I. V.,Sokolovskii, S. A.,Murakhovskaya, A. S.,Terent'ev, P. B.,Sharbatyan, P. A.

, p. 930 - 936 (2007/10/02)

Macrocyclic diamides were synthesized by condensation of bridged 1,7-bis(2-aminophenyl)-1,7-dioxaheptanes that contain an additional donor oxygen or nitrogen atom in the bridge with glutaric, diglycolic, and N-tosyliminodiacetic acid dichlorides under hig

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