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93215-51-1

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93215-51-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 93215-51-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,2,1 and 5 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 93215-51:
(7*9)+(6*3)+(5*2)+(4*1)+(3*5)+(2*5)+(1*1)=121
121 % 10 = 1
So 93215-51-1 is a valid CAS Registry Number.

93215-51-1Relevant articles and documents

Synthesis of phototrappable shape-shifting molecules for adaptive guest binding

Lippert, Alexander R.,Naganawa, Atsushi,Keleshian, Vasken L.,Bode, Jeffrey W.

supporting information; experimental part, p. 15790 - 15799 (2011/02/21)

We have designed and synthesized oligosubstituted bullvalenes 1 and 2 as adaptive molecules that can change their shapes in order to bind tightly to a suitable guest. By incorporation of a photolabile o-nitroveratryloxycarbonate (NVOC) group into bullvalenes 1 and 2, tightly binding species can be selectively isolated from a population of hundreds of interconverting structural isomers. Spontaneous strain-assisted Cope rearrangements allow these shape-shifting molecules to exist in a dynamic equilibrium of configurationally distinct valence isomers, as revealed by dynamic NMR and HPLC studies. When NVOC bullvalenes 1 and 2 were exposed to UV light, the cleavage of the NVOC group resulted in a mixture of static isomers of the corresponding bullvalone. Binding studies of NVOC bisporphyrin bullvalene 1 demonstrated that the dynamic isomeric equilibrium shifted in the presence of C60, favoring configurations with more favorable binding affinities. Irradiation of a mixture of 1 and C60 with UV light and isolation of the major static isomer yielded an isomer of bisporphyrin bullvalone with a binding affinity for C 60 that was ~2 times larger than that of the nonadapted isomer bisporphyrin bullvalone 41.

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