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874662-43-8

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874662-43-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 874662-43-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,4,6,6 and 2 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 874662-43:
(8*8)+(7*7)+(6*4)+(5*6)+(4*6)+(3*2)+(2*4)+(1*3)=208
208 % 10 = 8
So 874662-43-8 is a valid CAS Registry Number.

874662-43-8Relevant articles and documents

Synthesis and evaluation of new guanidine-thiourea organocatalyst for the nitro-Michael reaction: Theoretical studies on mechanism and enantioselectivity

Shubina, Tatyana E.,Freund, Matthias,Schenker, Sebastian,Clark, Timothy,Tsogoeva, Svetlana B.

, p. 1485 - 1498 (2012/10/29)

A new guanidine-thiourea organocatalyst has been developed and applied as bifunctional organocatalyst in the Michael addition reaction of diethyl malonate to trans-β-nitrostyrene. Extensive DFT calculations, including solvent effects and dispersion correc

Asymmetric organocatalysis with novel chiral thiourea derivatives: Bifunctional catalysts for the Strecker and nitro-Michael reactions

Tsogoeva, Svetlana B.,Yalalov, Denis A.,Hateley, Martin J.,Weckbecker, Christoph,Huthmacher, Klaus

, p. 4995 - 5000 (2007/10/03)

Novel bifunctional organocatalysts bearing both a thiourea moiety and an imidazole group on a chiral scaffold were synthesized and applied to the Strecker synthesis and nitro-Michael reaction. The addition of acetone to nitroolefins in the presence of these novel bifunctional organocatalysts gave enantioselectivities (up to 87 % ee) that are superior to those generated by the proline and/or homo-proline tetrazole catalysts described in the literature. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.

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