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131843-30-6

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131843-30-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131843-30-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,8,4 and 3 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 131843-30:
(8*1)+(7*3)+(6*1)+(5*8)+(4*4)+(3*3)+(2*3)+(1*0)=106
106 % 10 = 6
So 131843-30-6 is a valid CAS Registry Number.

131843-30-6Relevant articles and documents

A one-pot oxidation/cycloaddition cascade synthesis of 2,4-diaryl chromans via ortho-quinone methides

Wong, Yuk Fai,Wang, Zhaobin,Hong, Wen-Xu,Sun, Jianwei

, p. 2748 - 2751 (2016/05/19)

A one-pot oxidation/cycloaddition cascade for the synthesis of 2,4-diaryl chromans is developed. The reaction involves in situ oxidative generation of the unstable o-quinone methides followed by endo selective [4+2] cycloaddition with styrenes.

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