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928642-45-9

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928642-45-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 928642-45-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,8,6,4 and 2 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 928642-45:
(8*9)+(7*2)+(6*8)+(5*6)+(4*4)+(3*2)+(2*4)+(1*5)=199
199 % 10 = 9
So 928642-45-9 is a valid CAS Registry Number.

928642-45-9Relevant articles and documents

Studies of the stereochemistry of [2+2]-photocycloaddition reactions of 2-cyclohexenones with olefins

Shen, Ruichao,Corey

, p. 1057 - 1059 (2007)

(Chemical Equation Presented) Stereochemical studies of the photocycloaddition of a chiral α,β-enone and isobutylene lead to a working hypothesis for the geometry of the 3(π-π*) excited state of the enone.

Silver(I)-catalyzed ring-contractive rearrangement: A new entry to 5-alkylidene-2-cyclopentenones

Zhao, Liang,Wang, Jinlian,Zheng, Hongyan,Li, Yun,Yang, Ke,Cheng, Bin,Jin, Xiaojie,Yao, Xiaojun,Zhai, Hongbin

supporting information, p. 6378 - 6381 (2015/01/09)

A novel silver(I)-catalyzed ring-contractive rearrangement of 5-substituted 6-diazo-2-cyclohexenones has been developed, providing a new and efficient access to 5-alkylidene-2-cyclopentenones. The AgOTf-catalyzed reaction proceeds through metal-carbenoid formation followed by endocyclic allyl [1,2] migration with excellent stereoselectivity and broad substrate scope.

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