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1175542-11-6

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1175542-11-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1175542-11-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,5,5,4 and 2 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1175542-11:
(9*1)+(8*1)+(7*7)+(6*5)+(5*5)+(4*4)+(3*2)+(2*1)+(1*1)=146
146 % 10 = 6
So 1175542-11-6 is a valid CAS Registry Number.

1175542-11-6Relevant articles and documents

Molecular diversity of the domino annulation reaction of 2-aryl-3-nitrochromenes with pivaloylacetonitriles

Jiang, Wang,Sun, Jing,Liu, Ru-Zhang,Yan, Chao-Guo

supporting information, p. 5816 - 5822 (2018/08/21)

In the presence of triethylamine, the domino annulation reaction of two molecules of pivaloylacetonitrile with one molecule of 2-aryl-3-nitrochromene in tetrahydrofuran resulted in the unprecedented imino-substituted dihydrofuro[2,3-c]chromene derivatives in high yields. More importantly, the above domino reaction in refluxing methanol or ethanol afforded alkoxy-substituted chromeno[3,4-b]pyridines in satisfactory yields. However, a similar reaction of benzoylacetonitrile with 2-aryl-3-nitrochromenes in basic medium gave the expected furo[2,3-c]chromene derivatives in moderate yields.

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