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33665-11-1

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33665-11-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33665-11-1 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 1 respectively.
Calculate Digit Verification of CAS Registry Number 33665-11:
(7*3)+(6*3)+(5*6)+(4*6)+(3*5)+(2*1)+(1*1)=111
111 % 10 = 1
So 33665-11-1 is a valid CAS Registry Number.

33665-11-1Downstream Products

33665-11-1Relevant articles and documents

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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