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83717-73-1

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83717-73-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83717-73-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,7,1 and 7 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 83717-73:
(7*8)+(6*3)+(5*7)+(4*1)+(3*7)+(2*7)+(1*3)=151
151 % 10 = 1
So 83717-73-1 is a valid CAS Registry Number.

83717-73-1Relevant articles and documents

Synthesis of Substituted N-(2,4-Dioxo-1,2,3,4-tetrahydroquinazolinyl)benzamides and N-(2-Thiono-4-oxo-1,2,3,4-tetrahydroquinazolinyl)benzamides

Chau, Nguyen,Saegusa, Yasuo,Iwakura, Yoshio

, p. 541 - 544 (2007/10/02)

Substuted N-(2,3-dioxo-1,2,3,4-tetrahydroquinazolinyl)benzamides (3a-g) and substituted N-(2-thiono-4-oxo-1,2,3,4-tetrahydroquinazolinyl)benzamides (4a-g) were synthetized in one step from the reaction of methyl anthranilate with 2-aryl-1,3,4-oxadiazolin-5-ones (1a-g) and 2-aryl-1,3,4-oxadiazoline-5-thiones (2a-g), respectively, in m-cresol at 150-160 deg C.Alternative routes leading to the formation of 3a and 4a are also reported.

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