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286853-92-7

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286853-92-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 286853-92-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,6,8,5 and 3 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 286853-92:
(8*2)+(7*8)+(6*6)+(5*8)+(4*5)+(3*3)+(2*9)+(1*2)=197
197 % 10 = 7
So 286853-92-7 is a valid CAS Registry Number.

286853-92-7Relevant articles and documents

Total Syntheses of Squamocin A and Squamocin D

Emde, Ulrich,Koert, Ulrich

, p. 5979 - 5982 (1999)

The total syntheses of two acetogenins, squamocin A and squamocin D, have been achieved. The adjacent bis-THF subunit was constructed by a multiple Williamson reaction. The left and the right side chain were added by addition of organomagnesium compounds to aldehyde functions. The conversion of a carboxylic acid into the butenolide moiety concluded both syntheses.

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