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1334180-38-9

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1334180-38-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1334180-38-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,4,1,8 and 0 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1334180-38:
(9*1)+(8*3)+(7*3)+(6*4)+(5*1)+(4*8)+(3*0)+(2*3)+(1*8)=129
129 % 10 = 9
So 1334180-38-9 is a valid CAS Registry Number.

1334180-38-9Relevant articles and documents

Synthesis of the anti-HIV agent (-)-hyperolactone C by using oxonium ylide formation-rearrangement

Hodgson, David M.,Man, Stanislav

, p. 9731 - 9737 (2011/10/05)

Starting from readily available (S)-styrene oxide an asymmetric synthesis is described of the naturally occurring anti-HIV spirolactone (-)-hyperolactone C, which possesses adjacent fully substituted stereocenters. The key step involves a stereocontrolled RhII-catalysed oxonium ylide formation-[2,3] sigmatropic rearrangement of an α-diazo-β-ketoester bearing allylic ether functionality. From the resulting furanone, an acid-catalysed lactonisation and dehydrogenation gives the natural product.

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