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272439-39-1

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272439-39-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 272439-39-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,2,4,3 and 9 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 272439-39:
(8*2)+(7*7)+(6*2)+(5*4)+(4*3)+(3*9)+(2*3)+(1*9)=151
151 % 10 = 1
So 272439-39-1 is a valid CAS Registry Number.

272439-39-1Downstream Products

272439-39-1Relevant articles and documents

Tetralone esters as intermediates for the synthesis of podophyllotoxin derivatives via cyclopropanation of chalcones

Nanjundaswamy,Shashikanth,Anjanamurthy,Rai, K.M. Lokanatha

, p. 1179 - 1191 (2007/10/03)

Cyclopropyl ester (8a-f) were synthesized by the cyclopropanation of chalcones (7a-e) in dry benzene using powdered sodium in 80-85% yield. Preparation of tetralone ester (4a-e), an intermediate for the synthesis of podophyllotoxin derivatives by Lewis ac

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