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80194-49-6

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80194-49-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80194-49-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,1,9 and 4 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 80194-49:
(7*8)+(6*0)+(5*1)+(4*9)+(3*4)+(2*4)+(1*9)=126
126 % 10 = 6
So 80194-49-6 is a valid CAS Registry Number.

80194-49-6Relevant articles and documents

SYNTHESIS OF THE BACTERIAL COENZYME METHOXATIN

MacKenzie, A. Roderick,Moody, Christopher J.,Rees, Charles W.

, p. 3259 - 3268 (2007/10/02)

A short total synthesis of the bacterial coenzyme methoxatin (1) (4,5-dihydro-4,5-dioxo-1H-pyrroloquinoline-2,7,9-tricarboxylic acid) is described.The route involves the two step conversion of 4-acetamido-2-benzyloxybenzaldehyde (5b) into methyl 6-acetamido-4-benzyloxyindole-2-carboxylate (7b) (74percent), followed by regioselective annulation of the third ring (55percent), and debenzylation and oxidation with benzoyl t-butyl nitroxide to give the tricyclic quinone triester (13) (methoxatin triester) (83percent).

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