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131685-51-3

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131685-51-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131685-51-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,6,8 and 5 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 131685-51:
(8*1)+(7*3)+(6*1)+(5*6)+(4*8)+(3*5)+(2*5)+(1*1)=123
123 % 10 = 3
So 131685-51-3 is a valid CAS Registry Number.

131685-51-3Relevant articles and documents

Assignment of Stereochemistry in the Oligomycin/Rutamycin/Cytovaricin Family of Antibiotics. Asymmetric Synthesis of the Rutamycin Spiroketal Synthon

Evans, David A.,Rieger, Dale L.,Jones, Todd K.,Kaldor, Stephen W.

, p. 6260 - 6268 (2007/10/02)

The absolute stereochemistry of the rutamycin antibiotics 2a,b has been established through asymmetric synthesis of the known degradation product 4.One of the key steps in the assemblage process involves acylation of the metalated hydrazone 6 with the N-m

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