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74953-28-9

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74953-28-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74953-28-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,9,5 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 74953-28:
(7*7)+(6*4)+(5*9)+(4*5)+(3*3)+(2*2)+(1*8)=159
159 % 10 = 9
So 74953-28-9 is a valid CAS Registry Number.

74953-28-9Relevant articles and documents

Synthesis of Coniferyl and Dihydroconiferyl Derivatives Using Radical Bromination with N-Bromosuccinimide as the Key Step

Lindeberg, Otto

, p. 15 - 20 (2007/10/02)

Coniferyl and dihydroconiferyl derivatives have been synthesized by reacting bromides, obtained from allylic and benzylic brominations using N-bromosuccinimide (NBS), with appropriate nucleophiles.For instance, NBS bromination of eugenol acetate, followed by replacement of bromine by an acetoxy group and subsequent reduction with lithium aluminium hydride, afforded coniferyl alcohol in 65percent overall yield.Due to the availability of the starting materials (eugenol and isoeugenol) and the good overall yields obtained, these synthetic routes compete well with other methods of preparation.

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