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81477-68-1

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81477-68-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81477-68-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,4,7 and 7 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81477-68:
(7*8)+(6*1)+(5*4)+(4*7)+(3*7)+(2*6)+(1*8)=151
151 % 10 = 1
So 81477-68-1 is a valid CAS Registry Number.

81477-68-1Relevant articles and documents

Total Synthesis of Frustulosin and Aurocitrin

Ronald, Robert C.,Lansinger, Janet M.,Lillie, Thomas S.,Wheeler, Carl J.

, p. 2541 - 2549 (2007/10/02)

The regioselective total syntheses of the novel fungal antibiotics frustulosin (1) and aurocitrin (2) were accomplished from 3,6-dihydroxy-2-iodobenzaldehyde (10) which was prepared by a regiodirected metalation of 2,5-dimethylbenzyl vinyl ether to establish the 1,2,3,4-tetrasubstitution pattern of these compounds.The unsaturated side chains of these hydroquinone antibiotics were attached by using the iodo aldehyde functionalities.The structures of these antibiotics are confirmed by synthesis.

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