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80981-91-5

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80981-91-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80981-91-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,9,8 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 80981-91:
(7*8)+(6*0)+(5*9)+(4*8)+(3*1)+(2*9)+(1*1)=155
155 % 10 = 5
So 80981-91-5 is a valid CAS Registry Number.

80981-91-5Downstream Products

80981-91-5Relevant articles and documents

Synthesis of 8,9,10-Trimethoxyellipticine

Hewlins, Michael J. E.,Jackson, Anthony H.,Oliveira-Campos Ana-M.,Shannon, Patrick V. R.

, p. 2906 - 2911 (1981)

4,5,6-Trimethoxyindole was synthesised by three independent routes and condensed with hexane-2,5-dione to give 1,4-dimethyl-5,6,7-trimethoxycarbazole.Formylation of the latter gave a mixture including the 3-formyl derivative which was converted into 8,9,1

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