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1233344-67-6

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1233344-67-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1233344-67-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,3,4 and 4 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1233344-67:
(9*1)+(8*2)+(7*3)+(6*3)+(5*3)+(4*4)+(3*4)+(2*6)+(1*7)=126
126 % 10 = 6
So 1233344-67-6 is a valid CAS Registry Number.

1233344-67-6Downstream Products

1233344-67-6Relevant articles and documents

Imidazoanthraquinone derivatives for the chromofluorogenic sensing of basic anions and trivalent metal cations

Marn-Hernndez, Cristina,Santos-Figueroa, Luis E.,Moragues, Mara E.,Raposo, M. Manuela M.,Batista, Rosa M. F.,Costa, Susana P. G.,Pardo, Teresa,Martnez-Mez, Ramn,Sancenn, Flix

, p. 10752 - 10761 (2014)

Four imidazoanthraquinone derivatives (2a-d) were synthesized and characterized and their coordination behavior against selected anions and cations tested. Acetonitrile solutions of probes showed charge-transfer absorptions in the 407-465 nm range. The four probes emitted in the 533-571 nm interval. The recognition ability of 2a-d was evaluated in the presence of F-, Cl-, Br-, I-, OCN-, BzO-, ClO4-, AcO-, HSO4-, H2PO4-, and CN-. Only F-, AcO-, and H2PO4- induced a new red-shifted absorption band that was attributed to a deprotonation process involving the amine moiety of the imidazole ring. Moreover, upon increasing quantities of F-, AcO-, and H2PO4-, moderate quenching was induced in the emission of 2a-d together with the appearance of a new red-shifted band. The UV-visible and emission behavior of the four probes in the presence of Cu2+, Co2+, Mg2+, Fe3+, Ba2+, Fe2+, Ni2+, Ca2+, Zn2+, Pb2+, Cd2+, Cr3+, Al3+, K+, and Li+ was also assessed. Only addition of Fe3+, Cr3+, and Al3+ caused a new blue-shifted band in 2a-d that was ascribed to a preferential coordination with the acceptor part of the probes. Moreover, an important quenching of the emission was observed which was ascribed to the interaction between these trivalent cations and 2a-d.

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