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221354-65-0

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221354-65-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221354-65-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,3,5 and 4 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 221354-65:
(8*2)+(7*2)+(6*1)+(5*3)+(4*5)+(3*4)+(2*6)+(1*5)=100
100 % 10 = 0
So 221354-65-0 is a valid CAS Registry Number.

221354-65-0Relevant articles and documents

The synthesis of a natural product family: From debromoisolaurinterol to the aplysins

Harrowven, David C,Lucas, Matthew C,Howes, Peter D

, p. 791 - 804 (2007/10/03)

Total syntheses of (±)-aplysin 1, (±)-debromoaplysin 2, (±)-isoaplysin 3, (±)-aplysinol 4, (±)-debromoaplysinol 5, (±)-aplysinal 6, (±)-isolaurinterol 7 and (±)-debromoisolaurinterol 8 are described. Key features are a diastereoselective, sulfur mediated radical cyclisation of diene 12 to give 35; a new radical to polar crossover sequence mediated by Bu3Sn that transforms diene 12 into (±)-debromoisolaurinterol 8; and a series of biomimetic cyclisation and oxidation reactions.

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