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128721-67-5

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128721-67-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128721-67-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,2 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128721-67:
(8*1)+(7*2)+(6*8)+(5*7)+(4*2)+(3*1)+(2*6)+(1*7)=135
135 % 10 = 5
So 128721-67-5 is a valid CAS Registry Number.

128721-67-5Relevant articles and documents

A NOVEL ONE POT SYNTHESIS OF 1,3,7-TRIARYL-1,2,3,4-TETRAHYDRO-4-OXO-5-PHENYL-2-THIOXO-5H-PYRANOPYRIMIDINES

Ahluwalia, Vinod Kumar,Aggarwal, Rachna,Alauddin, Mohammad,Gill, Gurpreet,Khanduri, Chandra Has

, p. 129 - 137 (2007/10/02)

A novel one pot synthesis of 1,3,7-triaryl-1,2,3,4-tetrahydro-4-oxo-5-phenyl-2-thioxo-5H-pyranopyrimidines has been described.It utilizes the reaction of different thiobarbituric acids with chalcones.

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