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181121-98-2

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181121-98-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 181121-98-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,1,2 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 181121-98:
(8*1)+(7*8)+(6*1)+(5*1)+(4*2)+(3*1)+(2*9)+(1*8)=112
112 % 10 = 2
So 181121-98-2 is a valid CAS Registry Number.

181121-98-2Downstream Products

181121-98-2Relevant articles and documents

FOTOQUIMICA DE -TOLUIDIDAS DE ACIDOS αβ-INSATURADOS. INFLUENCIA DE LA ADICION DE CARBONATO POTASICO

Barbera, Carmen,Garcia, Hermenegildo,Miranda, Miguel Angel,Primo, Jaime

, p. 95 - 102 (2007/10/02)

Irradiation of the p-toluidides of crotonic and cinnamic acids (2a,c) gives rise predominantly to the cis isomers 5a,c, together with appreciable amounts of 4,6-dimethyl-3,4-dihydro-2-quinolone (6a) in the case of 2a.The corresponding photo-Fries products have not been detected, even when the irradiation is performed in the presence of K2CO3.By contrast, photolysis of the p-toluidides of methylcrotonic and phenylpropiolic acids (2b,d) gives rise to the o-aminophenones 7b,d (in addition to the quinolone 6b from 2b).For these two amides, as well as for acetanilide and benzanilide, the selectivity towards the acyl migration product markedly increases when the irradiation is performed in the presence of K2CO3.Key words: Enamides' photocyclization, photo-Fries, quinolones.

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