Cas 35155-94-3,4-methylthiopyrano[2,3-b]indol-2(9H)-one

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Check Digit Verification of cas no

The CAS Registry Mumber 35155-94-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,5,1,5 and 5 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 35155-94:
(7*3)+(6*5)+(5*1)+(4*5)+(3*5)+(2*9)+(1*4)=113
113 % 10 = 3
So 35155-94-3 is a valid CAS Registry Number.

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35155-94-3Relevant academic research and scientific papers

BF3 etherate-mediated microwave-assisted facile synthesis of thiopyrano[2,3-b]indol-2-one

Jha, Mukund,Davis, Connor,Fazzari, Julia,Vitali, Mario

, p. 7043 - 7046 (2014)

A facile synthesis of indole annulated 2H-thiopyran-2-ones has been developed by condensation of indoline-2-thiones with acetoacetic esters in the presence of borontrifluoride etherate (BF3 etherate) using microwave irradiation. This one-step operationally simple methodology leads to thiopyrano[2,3-b]indol-2-ones in good yields.

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