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57542-96-8

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57542-96-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57542-96-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,5,4 and 2 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 57542-96:
(7*5)+(6*7)+(5*5)+(4*4)+(3*2)+(2*9)+(1*6)=148
148 % 10 = 8
So 57542-96-8 is a valid CAS Registry Number.

57542-96-8Downstream Products

57542-96-8Relevant articles and documents

New structural analogs of papaverine: 3 benzyl 6,7 dimethoxy (di and tetrahydro) isoquinolines

Prudhommeaux,Ernouf,Foussard Blanpin,Viel

, p. 19 - 28 (2007/10/04)

Syntheses of 3 benzyl 3,4 dihydroisoquinolines by cyclisation of a N acyl α benzylhomoveratrylamine by means of polyphosphoric acid ester, in boiling toluene, gave yields between 60 and 90%. While the hydrogenation of these dihydroisoquinolines to tetrahydroisoquinolines with an alkaline borohydride gave satisfactory result, their dehydrogenation into isoquinolines could not be accomplished. Pharmacological properties of the hydrobromides or hydrochlorides of the bases of the two series of the aforementioned 3 benzylisoquinolines and comparison of their activities with those of papaverine and the analogues 1 and 4 benzylisoquinolines are reported.

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