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1616889-94-1

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1616889-94-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1616889-94-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,6,8,8 and 9 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1616889-94:
(9*1)+(8*6)+(7*1)+(6*6)+(5*8)+(4*8)+(3*9)+(2*9)+(1*4)=221
221 % 10 = 1
So 1616889-94-1 is a valid CAS Registry Number.

1616889-94-1Relevant articles and documents

Palladium-catalyzed hydrodehalogenation of butenolides: An efficient and sustainable access to β-arylbutenolides

Karak, Milandip,Barbosa, Luiz C.A.,Maltha, Celia R.A.,Silva, Thiago M.,Boukouvalas, John

, p. 2830 - 2834 (2017)

Several α-unsubstituted β-arylbutenolides have been prepared in 69–92% yield by reductive dehalogenation of α-halo-β-arylbutenolides. The latter were assembled in a single-step from α,β-dihalobutenolides, which are accessible on a large-scale from biomass-derived furfural. Our dehalogenation protocol is illustrated by a new synthesis of the marine antibiotics rubrolide E and F, and 3″-bromorubrolide F.

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