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94853-23-3

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94853-23-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94853-23-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,8,5 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 94853-23:
(7*9)+(6*4)+(5*8)+(4*5)+(3*3)+(2*2)+(1*3)=163
163 % 10 = 3
So 94853-23-3 is a valid CAS Registry Number.

94853-23-3Downstream Products

94853-23-3Relevant articles and documents

STEREOSELEKTIVE TOTALSYNTHESE VON (+/-)-TORREYOL

Franke, L.R. Rodriguez-Avial,Wolf, H.,Wray, V.

, p. 3491 - 3498 (2007/10/02)

Enones of formulae Ia-d undergo cyclization to give stereoselectively the enol esters IIa-d, respectively.IIa-d are suitable synthones for some sesquiterpene syntheses.-In this paper the synthesis of torreyol (1) is described by an all step strereocontrolled reaction sequence: cyclization educt 10 (Ic) was prepared by alkylation of 8 with 5 and enol ether cleavage of 9.The reaction sequence 11a (IIc)14a 1518 (ester hydrolysis, formation of the tert. alcohol, degradation of the isopropenyl group) followed by oxidation resulted in the formation of ketone 19 whose relative configuration was determined by the 2D J-resolved 400 MHz (1)H NMR spectrum.After methylation at C-8 (2223) the tosylhydrazone 25 underwent Bamford-Stevens reaction to yield (+/-)-1.

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