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949530-29-4

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949530-29-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 949530-29-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,9,5,3 and 0 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 949530-29:
(8*9)+(7*4)+(6*9)+(5*5)+(4*3)+(3*0)+(2*2)+(1*9)=204
204 % 10 = 4
So 949530-29-4 is a valid CAS Registry Number.

949530-29-4Relevant articles and documents

Fragmentation of nitrone triflates to 9-membered rings

Murphy, John A.,Mahesh, Mohan,McPheators, Gary,Vijaya Anand,McGuire, Thomas M.,Carlinga, Robert,Kennedy, Alan R.

, p. 3233 - 3236 (2008/02/11)

A new fragmentative rearrangement of nitrone derivatives to form 9-membered rings is reported. The fragmentations are triggered when nitrones are treated with triflic anhydride; a C-C bond antiperiplanar to the cleaving N-O bond is activated either by an oxygen lone pair or by an electron-rich aromatic ring. In the former case, further cyclization of the 9-membered intermediate leads to a rearranged condensed ring system, but when triggered by arenes, 9-membered ring amides are isolated.

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