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674819-73-9

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674819-73-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 674819-73-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,4,8,1 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 674819-73:
(8*6)+(7*7)+(6*4)+(5*8)+(4*1)+(3*9)+(2*7)+(1*3)=209
209 % 10 = 9
So 674819-73-9 is a valid CAS Registry Number.

674819-73-9Downstream Products

674819-73-9Relevant articles and documents

The synthesis of indolo- and pyrrolo[2,1-a]isoquinolines

De Koning, Charles B.,Michael, Joseph P.,Pathak, Rakhi,Van Otterlo, Willem A.L.

, p. 1117 - 1119 (2007/10/03)

The synthesis of fused isoquinolines from N-benzyl protected indoles and pyrroles is described. For example, treatment of t-butyl-2-(2-formyl-3,4- dihydro-1-naphthalenyl)-3-methyl-1H-indole-1-carboxylate with KOBut in DMF provided 14-methyl-8-phenylbenzo[h]indolo[2,1-a]isoquinoline in good yield. Analogous N-benzylpyrrole precursors could similarly be cyclized to give pyrrolo[2,1-a]isoquinolines.

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