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139057-01-5

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139057-01-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139057-01-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,5 and 7 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139057-01:
(8*1)+(7*3)+(6*9)+(5*0)+(4*5)+(3*7)+(2*0)+(1*1)=125
125 % 10 = 5
So 139057-01-5 is a valid CAS Registry Number.

139057-01-5Relevant articles and documents

Synthesis of new 5-hydroxyquinazoline derivatives from functionalized 5-acetyl-6-methylpyrimidines

Komkov, Alexander V.,Kozlov, Mikhail A.,Linitskii, Yurii A.,Vasil’ev, Leonid S.,Dmitrenok, Andrey S.,Zavarzin, Igor V.

, p. 772 - 786 (2021/09/11)

[Figure not available: see fulltext.] A new method for the synthesis of quinazolines based on the annulation of the benzene ring to 5-acetyl-6 methylpyrimidin-2-one(thione) derivatives has been proposed. Condensation of the latter at the methyl group with

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