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128581-41-9

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128581-41-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128581-41-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,5,8 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128581-41:
(8*1)+(7*2)+(6*8)+(5*5)+(4*8)+(3*1)+(2*4)+(1*1)=139
139 % 10 = 9
So 128581-41-9 is a valid CAS Registry Number.

128581-41-9Upstream product

128581-41-9Downstream Products

128581-41-9Relevant academic research and scientific papers

A new approach to pyrrolophenanthridone alkaloids via intramolecular radical cyclization

Tsuge, Otohiko,Hatta, Taizo,Tsuchiyama, Hiroshi

, p. 155 - 156 (1998)

A new approach to the synthesis of pyrrolophenanthridone class of alkaloids is described. The method is based on intramolecular radical cyclization of easily accessible 1-aroyl-7-bromoindoles with Bu3SnH and AIBN.

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