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164020-64-8

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164020-64-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 164020-64-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,4,0,2 and 0 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 164020-64:
(8*1)+(7*6)+(6*4)+(5*0)+(4*2)+(3*0)+(2*6)+(1*4)=98
98 % 10 = 8
So 164020-64-8 is a valid CAS Registry Number.

164020-64-8Relevant articles and documents

Free-Radical Chemistry of Imines

Tomaszewski, Miroslaw J.,Warkentin, John,Werstiuk, Nick H.

, p. 291 - 322 (2007/10/02)

Aryl radicals bearing an aldimino functional group as part of an ortho substituent cyclized by addition to C and/or N of the imino group.When the choice was between 5-exo closure to C and 6-endo closure to N, the former predominated.However, 6-endo closure to C predominated over 5-exo cyclization to N in isomeric imines.Absolute values of cyclization rate constants were determined and an explanation for the unusual 6-endo preference is offered.Chiral induction in 6-endo cyclization to C of an aldimine from D-glyceraldehyde acetonide was observed, and its sense was determined.

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