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208249-58-5

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208249-58-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 208249-58-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,2,4 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 208249-58:
(8*2)+(7*0)+(6*8)+(5*2)+(4*4)+(3*9)+(2*5)+(1*8)=135
135 % 10 = 5
So 208249-58-5 is a valid CAS Registry Number.

208249-58-5Upstream product

208249-58-5Relevant articles and documents

Ruthenium-Catalyzed Polycyclization Reactions

Zuercher, William J.,Scholl, Matthias,Grubbs, Robert H.

, p. 4291 - 4298 (1998)

The application of ruthenium alkylidenes such as 1 to the catalysis of polycyclization reactions is reported. Several acyclic precursors have been synthesized and reacted with 1. These precursors vary in topology and contain acetylenic and/or cycloolefinic metathesis relays. The cyclization reactions proceed in moderate to good yields to produce polycyclic polyenes when the precursors are subjected to catalytic amounts of 1. In general, precursors bearing n relay units generate polycycles containing (n + 1) rings.

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