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57772-73-3

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57772-73-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57772-73-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,7 and 2 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 57772-73:
(7*5)+(6*7)+(5*7)+(4*7)+(3*2)+(2*7)+(1*3)=163
163 % 10 = 3
So 57772-73-3 is a valid CAS Registry Number.

57772-73-3Relevant articles and documents

Rhodium Porphyrin Catalyzed Regioselective Transfer Hydrogenolysis of C-C σ-Bonds in Cyclopropanes with iPrOH

Chen, Chen,Feng, Shiyu,Chan, Kin Shing

, p. 2582 - 2589 (2019/07/02)

A new rhodium porphyrin catalyzed regioselective transfer hydrogenolysis of both activated and unactivated cyclopropanes employing iPrOH as the hydrogen source was discovered. The reaction mechanism for the C-C σ-bond activation of cyclopropanes was identified through an initial radical substitution with rhodium(II) metalloporphyrin radical to give a rhodium porphyrin alkyl, followed by hydrogenolysis with iPrOH to give the corresponding acyclic alkanes and regenerate rhodium(II) metalloporphyrin radical.

Overturning established chemoselectivities: Selective reduction of arenes over malonates and cyanoacetates by photoactivated organic electron donors

Doni, Eswararao,Mondal, Bhaskar,O'Sullivan, Steven,Tuttle, Tell,Murphy, John A.

, p. 10934 - 10937 (2013/08/23)

The prevalence of metal-based reducing reagents, including metals, metal complexes, and metal salts, has produced an empirical order of reactivity that governs our approach to chemical synthesis. However, this reactivity may be influenced by stabilization of transition states, intermediates, and products through substrate-metal bonding. This article reports that in the absence of such stabilizing interactions, established chemoselectivities can be overthrown. Thus, photoactivation of the recently developed neutral organic superelectron donor 5 selectively reduces alkyl-substituted benzene rings in the presence of activated esters and nitriles, in direct contrast to metal-based reductions, opening a new perspective on reactivity. The altered outcomes arising from the organic electron donors are attributed to selective interactions between the neutral organic donors and the arene rings of the substrates.

Dipeptides as renin inhibitors

-

, (2008/06/13)

Dipeptides are described which are represented by the formula STR1 wherein the various substituents are defined hereinbelow. These compounds have a strong inhibitory efect on human renin, and are useful as a therapeutically active agent for the treatment of hypertension, especially renin-associated hypertension.

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