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687638-56-8

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687638-56-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 687638-56-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,7,6,3 and 8 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 687638-56:
(8*6)+(7*8)+(6*7)+(5*6)+(4*3)+(3*8)+(2*5)+(1*6)=228
228 % 10 = 8
So 687638-56-8 is a valid CAS Registry Number.

687638-56-8Downstream Products

687638-56-8Relevant articles and documents

Pentadienyl transfer reagents based on zirconium: Preparation and reactions with carbonyl compounds

Bertus, Philippe,Drouin, Ludovic,Laroche, Christophe,Szymoniak, Jan

, p. 1375 - 1383 (2004)

A variety of 2,4-pentadienylzirconiums were generated by reacting pentadienyl ethers with zirconocene 'Cp2Zr'. These complexes underwent a highly γ-regioselective and anti-stereoselective in situ addition with carbonyl compounds to afford bis(h

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