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139268-44-3

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139268-44-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139268-44-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,6 and 8 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 139268-44:
(8*1)+(7*3)+(6*9)+(5*2)+(4*6)+(3*8)+(2*4)+(1*4)=153
153 % 10 = 3
So 139268-44-3 is a valid CAS Registry Number.

139268-44-3Relevant articles and documents

Cycloadducts of Ethene with 2(1H)-Pyrazinones and their conversion into 2,5-Diazabicyclooctane-3,6-diones.

Loosen, Patrick K.,Tutonda, Mayoka G.,Khorasani, Masoumeh F.,Compernolle, Frans,Hoornaert, Georges J.

, p. 9259 - 9268 (2007/10/02)

Cycloaddition of variously substituted 2(1H)-pyrazinones with ethene and subsequent hydrolysis of the adducts 2 provides a general and efficient route to the title compounds 3.Compound 3m was used as a building block for a structural analogue of gliotoxin

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