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624720-91-8

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624720-91-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 624720-91-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,2,4,7,2 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 624720-91:
(8*6)+(7*2)+(6*4)+(5*7)+(4*2)+(3*0)+(2*9)+(1*1)=148
148 % 10 = 8
So 624720-91-8 is a valid CAS Registry Number.

624720-91-8Relevant articles and documents

First total syntheses of the 1,2,3,4-tetrahydronaphtho[2,1-f]isoquinolines annoretine and litebamine

Pampín, M. Carme,Estévez, Juan C.,Estévez, Ramón J.,Suau, Rafael,Castedo, Luis

, p. 8057 - 8065 (2007/10/03)

We describe here the first total synthesis of the two natural 1,2,3,4-tetrahydronaphtho[2,1-f]isoquinolines, annoretine and litebamine, from [2-(2-styrylphenyl)ethyl]methylcarbamic acid ethyl esters. The key steps were the Bischler-Napieralski cyclization

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