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91165-23-0

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91165-23-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91165-23-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,6 and 5 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91165-23:
(7*9)+(6*1)+(5*1)+(4*6)+(3*5)+(2*2)+(1*3)=120
120 % 10 = 0
So 91165-23-0 is a valid CAS Registry Number.

91165-23-0Downstream Products

91165-23-0Relevant 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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