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911228-44-9

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911228-44-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 911228-44-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,1,2,2 and 8 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 911228-44:
(8*9)+(7*1)+(6*1)+(5*2)+(4*2)+(3*8)+(2*4)+(1*4)=139
139 % 10 = 9
So 911228-44-9 is a valid CAS Registry Number.

911228-44-9Relevant articles and documents

General and efficient synthetic approach to novel tricyclic spiroketones

Chu, Guo-Hua,Le Bourdonnec, Bertrand,Gu, Minghua,Saeui, Christopher T.,Dolle, Roland E.

experimental part, p. 5161 - 5167 (2009/12/09)

A general and efficient synthetic approach to tricyclic spiroketones of interest as useful scaffolds in drug discovery was developed. Starting from commercially available benzyl 4-oxo-1-piperidinecarboxylate (5), spirocyclic tetralone 4, spirocyclic indanone 14, and spirocyclic benzocycloheptanone 15 were synthesized via six reaction steps in excellent overall yield.

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