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128721-53-9

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128721-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128721-53-9 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, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128721-53:
(8*1)+(7*2)+(6*8)+(5*7)+(4*2)+(3*1)+(2*5)+(1*3)=129
129 % 10 = 9
So 128721-53-9 is a valid CAS Registry Number.

128721-53-9Downstream Products

128721-53-9Relevant articles and documents

A novel two step synthesis of 3,4-dihydro-4-oxo-5H-pyrano[2,3-d]pyrimidines

Khurana, Jitender M.,Agrawal, Arpita,Kukreja, Gagan

, p. 1885 - 1892 (2006)

A novel two step synthesis of 5,7-diaryl-3,4-dihydro-4-oxo-5H-pyrano[2,3-d]pyrimidines has been reported based on condensation of 2-thiobarbiturates with chalcones followed by reductive desulfurization of 5,7-diaryl-1,2,3,4-tetrahydro-4-oxo-2-thioxo-5H-py

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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