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2900-11-0

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2900-11-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2900-11-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,9,0 and 0 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2900-11:
(6*2)+(5*9)+(4*0)+(3*0)+(2*1)+(1*1)=60
60 % 10 = 0
So 2900-11-0 is a valid CAS Registry Number.

2900-11-0Relevant articles and documents

The Grob/Eschenmoser fragmentation of cycloalkanones bearing β-electron withdrawing groups: A general strategy to acyclic synthetic intermediates

Hierold, Judith,Hsia, Tina,Lupton, David W.

, p. 783 - 792 (2011)

Introduction of a β-electron withdrawing group to cycloalkanones allows facile C-C bond fragmentation. The reaction has been demonstrated with a large range of ring sizes, bearing various leaving and electron withdrawing groups, and using a variety of nitrogen and oxygen containing nucleophiles (>30 examples). The application of fragmentation products to the preparation of substituted γ-lactones has been demonstrated. Mechanistic studies are reported which are suggestive of a Grob/Eschenmoser type reaction.

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