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64418-88-8

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64418-88-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 64418-88-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,4,1 and 8 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 64418-88:
(7*6)+(6*4)+(5*4)+(4*1)+(3*8)+(2*8)+(1*8)=138
138 % 10 = 8
So 64418-88-8 is a valid CAS Registry Number.

64418-88-8Relevant articles and documents

Total Synthesis of Divergolides E and H

Caplan, Scott M.,Floreancig, Paul E.

, p. 15866 - 15870 (2018/11/10)

This manuscript describes the first total syntheses of divergolides E and H. The route employs a telescoped hetero-Diels–Alder and oxidative carbon–hydrogen bond cleavage as an entry into the central bridged bicyclic acetal unit. Additional key steps of the highly convergent route include a desymmetrizing epoxidation, a chelation-controlled alkenylzinc addition, an amide formation between a hindered aniline and an acylating agent that is prone to ketene formation, and a challenging macrolactonization.

Fischer's base as a protecting group: Protection and deprotection of 2- hydroxybenzaldehydes

Cho, Young Jin,Lee, Seung Hwan,Bae, Jong Woo,Pyun, Hyung-Jung,Yoon, Cheol Min

, p. 3915 - 3917 (2007/10/03)

The hydroxyl and aldehyde groups of 2-hydroxybenzaldehydes were protected by the reaction with Fischer's base and deprotected by the ozonolysis in methanol at -78°C to give the corresponding 2- hydroxybenzaldehydes in good to high yields. (C) 2000 Elsevier Science Ltd.

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