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26828-56-8

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26828-56-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 26828-56-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,8,2 and 8 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 26828-56:
(7*2)+(6*6)+(5*8)+(4*2)+(3*8)+(2*5)+(1*6)=138
138 % 10 = 8
So 26828-56-8 is a valid CAS Registry Number.

26828-56-8Relevant articles and documents

THE SYNTHESIS AND CHEMISTRY OF AZOLENINES. PART 8. THE PAAL-KNORR REACTION WITH CYCLIC 2-(ACYLMETHYL)-2-ALKYL-1,3-DIKETONES: ISOLATION OF 1-ACYL-1H-PYRROLES VIA REARRANGEMENT

Maini, Prem Nath,Sammes, Michael P.,Katritzky, Alan R.

, p. 161 - 168 (2007/10/02)

Treatment of cyclic 2-acylmethyl-2-alkyl-1,3-diketones with ammonium acetate under reflux in acetic acid gives moderate to high yields of 1-acyl-1H-pyrroles by rearrangement.Some of the cyclic diketones react quantitatively with liquid ammonia to yield 2-

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