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42788-17-0

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42788-17-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42788-17-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,7,8 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 42788-17:
(7*4)+(6*2)+(5*7)+(4*8)+(3*8)+(2*1)+(1*7)=140
140 % 10 = 0
So 42788-17-0 is a valid CAS Registry Number.

42788-17-0Relevant articles and documents

In(OTf)3-catalyzed highly chemo- and regioselective head-to-tail heterodimerization of vinylarenes with 1,1-diarylethenes

Dai, Jing,Wu, Jinlong,Zhao, Guanglian,Dai, Wei-Min

supporting information; experimental part, p. 8290 - 8293 (2011/08/10)

Cross combination: The olefinic C-H bond in 1,1-diarylethenes selectively adds to the C=C double bond of substituted styrenes in a head-to-tail fashion under In(OTf)3 (OTf=triflate) catalysis (see scheme) while homo- and cyclodimerization reactions are suppressed. The high chemo- and regioselectivity of this intermolecular hydroalkenylation originates from the high stability and steric bulk of the diaryl-substituted tertiary carbocation intermediate. Copyright

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