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135503-16-1

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135503-16-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135503-16-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,5,0 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 135503-16:
(8*1)+(7*3)+(6*5)+(5*5)+(4*0)+(3*3)+(2*1)+(1*6)=101
101 % 10 = 1
So 135503-16-1 is a valid CAS Registry Number.

135503-16-1Relevant articles and documents

Stereoselective Synthesis of Alcohols, XXXVIII. - Stereoselective Total Synthesis of the Denticulatins

Andersen, Marc W.,Hildebrandt, Bernhard,Dahmann, Georg,Hoffmann, Reinhard W.

, p. 2127 - 2139 (2007/10/02)

The total synthesis of the denticulatins 1 is described.Key feature is the efficient generation of the C-1-to-C-9 building block 37 by three consecutive stereoselective carbon-carbon bond-forming steps using chiral allylboronates.The C10-to-C-17 building block was obtained by kinetic Sharpless resolution of an allylic alcohol followed by an Ireland-Claisen rearrangement. Key Words: Marine natural products / Hemiketal formation, selective / Denticulatins

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