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33299-27-3

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33299-27-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33299-27-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,2,9 and 9 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 33299-27:
(7*3)+(6*3)+(5*2)+(4*9)+(3*9)+(2*2)+(1*7)=123
123 % 10 = 3
So 33299-27-3 is a valid CAS Registry Number.

33299-27-3Relevant articles and documents

Direct sequential C3 and C1 arylation reaction of imidazo[1,5-a]pyridine catalyzed by a 1,10-phenanthrolinepalladium complex

Yamaguchi, Eiji,Shibahara, Fumitoshi,Murai, Toshiaki

supporting information; experimental part, p. 939 - 940 (2011/12/05)

The direct sequential arylation reaction at the C3 and C1 positions of imidazo[1,5-a]pyridines with a variety of aryl iodides catalyzed by [Pd(phen)2](PF6)2 is described. The reaction of unsubstituted imidazo[1,5-a]pyridine with various aryl iodides proceeded selectively at the C3 position to exclusively give the corresponding C3-arylated products. The one-pot double-arylation reaction at the C3 and C1 positions of unsubstituted imidazo[1,5-a]pyridine with different aryl groups was also achieved.

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