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679437-92-4

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679437-92-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 679437-92-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,9,4,3 and 7 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 679437-92:
(8*6)+(7*7)+(6*9)+(5*4)+(4*3)+(3*7)+(2*9)+(1*2)=224
224 % 10 = 4
So 679437-92-4 is a valid CAS Registry Number.

679437-92-4Relevant articles and documents

Branched Phospha[7]triangulanes

Slootweg, J. Chris,Schakel, Marius,De Kanter, Frans J. J.,Ehlers, Andreas W.,Kozhushkov, Sergei I.,De Meijere, Armin,Lutz, Martin,Spek, Anthony L.,Lammertsma, Koop

, p. 3050 - 3051 (2004)

A highly strained, thermally stable (up to 150 °C) branched phospha[7]triangulane was synthesized from the second-generation bicyclopropylidene and transient phosphinidene [Ph?P=W(CO)5], followed by demetalation in refluxing xylene. Bulkier transient CuCl?alkene-complexed phosphinidene gave 2-phosphabicyclo-[3.2.0]hept-1(5)-ene as an additional product. The "outer sphere" spirocyclopropanes provide a stabilizing factor for both of these novel compounds. Copyright

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