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399513-49-6

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399513-49-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 399513-49-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,9,9,5,1 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 399513-49:
(8*3)+(7*9)+(6*9)+(5*5)+(4*1)+(3*3)+(2*4)+(1*9)=196
196 % 10 = 6
So 399513-49-6 is a valid CAS Registry Number.

399513-49-6Relevant articles and documents

Nucleophilic Organic Base DABCO-Mediated Chemospecific Meinwald Rearrangement of Terminal Epoxides into Methyl Ketones

Li, Siqi,Shi, Yi,Li, Pingfan,Xu, Jiaxi

, p. 4443 - 4450 (2019)

Nucleophilic organic base DABCO (1,4-diazabicyclo[2.2.2]octane)-mediated Meinwald rearrangement of various epoxides was investigated. 2-Aryl-, alkenyl-, and alkynylepoxides generate the corresponding methyl ketones chemospecifically in good to excellent yields. The current DABCO-mediated Meinwald rearrangement of epoxides features readily accessible starting materials, a wide substrate scope, a transition-metal- and acid-free environment, and chemospecificity in the isomerization of epoxides.

Chemoselective cross metathesis of bishomoallylic alcohols: Rapid access to fragment A of the cryptophycins

Lautens, Mark,Maddess, Matthew L.

, p. 1883 - 1886 (2007/10/03)

Equation presented. The racemic or enantioselective allylation of in situ formed β,γ-unsaturated aldehydes provides efficient access to bishomoallylic alcohols from readily available 2-vinyloxiranes. These products, when subjected to modified Grubbs cross

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