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393589-26-9

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393589-26-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 393589-26-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,9,3,5,8 and 9 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 393589-26:
(8*3)+(7*9)+(6*3)+(5*5)+(4*8)+(3*9)+(2*2)+(1*6)=199
199 % 10 = 9
So 393589-26-9 is a valid CAS Registry Number.

393589-26-9Relevant articles and documents

Total synthesis of pamamycin-607

Wang, Yuzhou,Bernsmann, Heiko,Gruner, Margit,Metz, Peter

, p. 7801 - 7804 (2001)

The macrodiolide antibiotic pamamycin-607 has been synthesized by coupling of the two hydroxy acid constituents using the Yamaguchi method. While the final lactonization with formation of the ester linkage between C(1) and the C(8′) oxygen proceeded with complete C(2) epimerization, the alternative ring closure involving the carboxylic acid of the smaller fragment and the hydroxyl group of the larger fragment yielded the target molecule.

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