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437613-72-4

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437613-72-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 437613-72-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,7,6,1 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 437613-72:
(8*4)+(7*3)+(6*7)+(5*6)+(4*1)+(3*3)+(2*7)+(1*2)=154
154 % 10 = 4
So 437613-72-4 is a valid CAS Registry Number.

437613-72-4Relevant articles and documents

Recyclable chiral metathesis catalysts

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Page 9, (2010/02/05)

The present invention relates to chiral metal catalysts for stereoselective olefin metathesis reactions, which are recyclable and reusable in such metathesis reactions. The chiral metal-based metathesis catalysts of the invention comprise multidentate optically active or racemic chiral ligands that enable their use in asymmetric synthetic processes, such as for example, in ring-opening and ring-closing metathesis reactions (ROM and RCM, respectively) of alkenes. The catalysts of the invention are organometallic complexes of multivalent metals comprising one or more chiral bidentate ligands that exhibit superior reactivity and stereoselectivity properties. The present invention also provides methods of making such catalysts and methods for utilizing them in catalyzing stereoselective olefin metathesis reactions to provide asymmetric products in relatively high enantiomeric or stereoisomeric excess.

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