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742078-66-6

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742078-66-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 742078-66-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,2,0,7 and 8 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 742078-66:
(8*7)+(7*4)+(6*2)+(5*0)+(4*7)+(3*8)+(2*6)+(1*6)=166
166 % 10 = 6
So 742078-66-6 is a valid CAS Registry Number.

742078-66-6Relevant articles and documents

Transition-metal-catalyzed synthesis of aspergillide B: An alkyne addition strategy

Trost, Barry M.,Bartlett, Mark J.

supporting information; experimental part, p. 1322 - 1325 (2012/04/23)

A catalytic enantioselective formal total synthesis of aspergillide B is reported. This linchpin synthesis was enabled by the development of new conditions for Zn-ProPhenol catalyzed asymmetric alkyne addition. This reaction was used in conjunction with ruthenium-catalyzed trans-hydrosilylation to affect the rapid construction of a late-stage synthetic intermediate of aspergillide B to complete a formal synthesis of aspergillide B in a highly efficient manner.

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