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1289557-70-5

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1289557-70-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1289557-70-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,9,5,5 and 7 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1289557-70:
(9*1)+(8*2)+(7*8)+(6*9)+(5*5)+(4*5)+(3*7)+(2*7)+(1*0)=215
215 % 10 = 5
So 1289557-70-5 is a valid CAS Registry Number.

1289557-70-5Relevant articles and documents

A short stereoselective synthesis of the protected uracil 3′-epi-polyoxin C

Gonda, Jozef,Martinkova, Miroslava,Baur, Andrea

, p. 207 - 214 (2011/05/02)

A short synthetic approach to the protected uracil 3′-epi-polyoxin C 20 has been developed. The stereoselective [3,3]-sigmatropic rearrangement of the corresponding 7-thiocyanato-α-d-xylo-hept-5-enfuranose 6 was employed as the key step to construct the C-5 stereocentre in 5-isothiocyanato-α-d- gluco-hept-6-enfuranose 8 and the formal synthesis of uracil 3′-epi-polyoxin C has been accomplished for the first time. This synthesis provides a facile method for multigram scale preparation and thus is useful for the research into the polyoxins' structure-activity relationship and to search for more potent and effective anticandidal agents.

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