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130195-91-4

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130195-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 130195-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,1,9 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 130195-91:
(8*1)+(7*3)+(6*0)+(5*1)+(4*9)+(3*5)+(2*9)+(1*1)=104
104 % 10 = 4
So 130195-91-4 is a valid CAS Registry Number.

130195-91-4Relevant articles and documents

Menthol mediated optical resolution of 10-oxatricyclodecadienones. Application in the enantioselective synthesis of cyclopentenoids

Houwen-Claassen, Adrie A. M.,Klunder,Zwanenburg,Beurskens, Paul T.,Moers,Beurskens, Gezina

, p. 4283 - 4294 (2007/10/02)

The efficient conversion of 5-ethoxy-4-p-tolylsulphonylmhetyl-exo-10-oxatricyclo[5.2.1.0 2,6]deca-4,8-dien-3-one 6 into a diastereomeric mixture of the (-)menthyl ethers, 9a and 9b, is described. Separation of these ethers, followed by reductio

SULFONE MEDIATED SYNTHESIS OF CYCLOPENTADIENONE EPOXIDES FROM 10-OXATRICYCLO /5.2.1.02,6/ DECADIENONES . A CONVENIENT ROUTE TO epi-PENTENOMYCINS

Klunder, A. J. H.,Houwen-Claassen, A. A. M.,Kooy, M. G.,Zwanenburg, B.

, p. 1329 - 1332 (2007/10/02)

Sulfonylmethylation of 10-oxatricyclodecadienone 6 leads to sulfone 4 which forms the key intermediate in the synthesis of 5-alkoxymethylcyclopentadienone epoxides 5.Acid catalyzed hydrolysis of 5 followed by acylation affords epi-pentenomycin derivates 1

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