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88203-80-9

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88203-80-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 88203-80-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,2,0 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 88203-80:
(7*8)+(6*8)+(5*2)+(4*0)+(3*3)+(2*8)+(1*0)=139
139 % 10 = 9
So 88203-80-9 is a valid CAS Registry Number.

88203-80-9Relevant articles and documents

Functionalised Carbocycles from Carbohydrates. Part 3. The Synthesis of the Epoxy Lactone Prostaglandin Intermediate via an Isoxazolidine Derivative. X-Ray Crystal Structure of (1R,5R)-6-exo,7-endo-Dibenzoyloxy-8-exo-iodo-3-oxo-2-oxabicyclooctane

Ferrier, Robert J.,Prasit, Petpiboon,Gainsford, Graeme J.

, p. 1629 - 1634 (2007/10/02)

The bicyclic isoxazolidine 6,7-dibenzoyloxy-N-methyl-8-tosyloxy-3-oxa-2-azabicyclooctane (1), which is easily obtained from a readily available D-glucose derivative, has been converted into the epoxy lactone 8-oxo-3,7-dioxatricyclo2,4>nonane (13), via a series of cyclopentane derivatives, in ten steps.Since the product (13) can be used to prepare prostaglandins this sequence represents a new route to these compounds in their enantiomerically pure natural form.

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