Cas 33665-13-3,5-benzylidene-3-isobutyl-2-thioxo-imidazolidin-4-one

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Check Digit Verification of cas no

The CAS Registry Mumber 33665-13-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,6,6 and 5 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 33665-13:
(7*3)+(6*3)+(5*6)+(4*6)+(3*5)+(2*1)+(1*3)=113
113 % 10 = 3
So 33665-13-3 is a valid CAS Registry Number.

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33665-13-3Relevant academic research and scientific papers

Facile synthesis of 2-alkylthio-5-phenylmethylene-4H-imidazol-4-ones

Sun, Yong,Ding, Ming-Wu

, p. 348 - 351 (2007/10/03)

The facile synthesis of 2-alkylthio-5-phenylmethylene-4H-imidazol-4-ones was discussed. Using reagents like RI and BrCH2COR the alkylation reaction was carried out at room temperature, while it was carried out at 50°C-60°C with other reagents. The stretching mode of C=C showed relatively strong absorption at about 1635 cm-1.

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