Cas 82996-71-2,2,3-diphenyl-9-crown-3

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Check Digit Verification of cas no

The CAS Registry Mumber 82996-71-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,9,9 and 6 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 82996-71:
(7*8)+(6*2)+(5*9)+(4*9)+(3*6)+(2*7)+(1*1)=182
182 % 10 = 2
So 82996-71-2 is a valid CAS Registry Number.

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82996-71-2Relevant academic research and scientific papers

UNSATURATED CROWN ETHERS: STILBENO-CROWN ETHERS

Inoue, Yoshihisa,Ouchi, Mikio,Nakazato, Toshiyo,Matsuda, Takashi,Hakushi, Tadao

, p. 781 - 784 (2007/10/02)

Stilbenocrown ethers 3a,c and 4a,b were synthesized in a cyclization reaction of benzoin with oligoethylene glycol ditosylates (2a-c) under a phase-transfer condition.Extractions of aqueous alkali picrates (Na+-Cs+) were examined with the distilbenocrown ethers 4a,b, the partially-hydrogenated tetraphenylcrown ethers 6a,b, and the fully-hydrogenated tetracyclohexylcrown ethers 7a,b.

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