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177489-93-9

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177489-93-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 177489-93-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,4,8 and 9 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 177489-93:
(8*1)+(7*7)+(6*7)+(5*4)+(4*8)+(3*9)+(2*9)+(1*3)=199
199 % 10 = 9
So 177489-93-9 is a valid CAS Registry Number.

177489-93-9Downstream Products

177489-93-9Relevant articles and documents

Cascade reactions of methyl-2-chloro-2-cyclopropylideneacetate with five- and seven-membered cyclic dienolates: A novel approach to the bicyclo[4.2.1]nonane segment of the skeleton of mediterraneols

Hadjiarapoglou,Klein,Spitzner,De Meijere

, p. 525 - 528 (1996)

The MIMIRC (Michael-Michael-Ring Closure) reaction of methyl 2-chloro-2-cyclopropylideneacetate (5) with the cyclic dienolates 6a, 6c, and the one derived from 11-R under aprotic conditions gave the tricyclic adducts 7a, 7c, and 10-R, respectively, in moderate to good yield. Compound 10-R is conceived as a potential intermediate for the synthesis of the biologically active marine diterpenes mediterraneol 1.

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