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188759-74-2

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188759-74-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188759-74-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,7,5 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 188759-74:
(8*1)+(7*8)+(6*8)+(5*7)+(4*5)+(3*9)+(2*7)+(1*4)=212
212 % 10 = 2
So 188759-74-2 is a valid CAS Registry Number.

188759-74-2Relevant articles and documents

Trapping of Cp*W(NO)(η2-PhC≡CH), the key intermediate in the C-H activation of alkanes by Cp*W(NO)(CH2SiMe3)(CPh≡CH2)

Legzdins, Peter,Lumb, Sean A.

, p. 1825 - 1827 (1997)

Thermolysis of the vinyl nitrosyl complex Cp*W(NO)(CH2SiMe3)(CPh=CH2) (1) in ethyl acetate or acetonitrile affords the oxa- or azametallacycles Cp*W(NO)(η2-OC(Me)(OEt)CH=CPh) (2) or Cp*W(NO)(η3-HNC(Me)=NC(=CH2)CH=CPh) (3) and Cp*W(NO)-(OH)(η2-CN=C(Me)CH=CPh) (4), respectively. Kinetic and mechanistic studies provide compelling evidence for a pathway involving initial rate-limiting unimolecular elimination of SiMe4 from 1 with concomitant formation of Cp*W(NO)(η2-CPh≡CH) (A).

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