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262849-41-2

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262849-41-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 262849-41-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,2,8,4 and 9 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 262849-41:
(8*2)+(7*6)+(6*2)+(5*8)+(4*4)+(3*9)+(2*4)+(1*1)=162
162 % 10 = 2
So 262849-41-2 is a valid CAS Registry Number.

262849-41-2Relevant articles and documents

Enantioselective synthesis of (2R,4'R,8'R)-α-tocopherol (Vitamin E) based on enzymatic function

Nozawa, Masako,Takahashi, Keiko,Kato, Keisuke,Akita, Hiroyuki

, p. 272 - 277 (2000)

Syntheses of (S)-chroman-2-carboxaldehyde congener 1 and (S)-chiral isoprene unit 3 were achieved based on the enzymatic acetylation of (±)- chroman-2-methanol 6 and (±)-(2,3)-anti-2-methyl-3-(p-methoxyphenyl)-1,3- propane diol 12, respectively. Synthesis of the side-chain part corresponding to (3R,7R)-3,7,11-trimethyldodecan-1-ol 27 was achieved by the coupling reaction of (S)-3 and (R)-3,7-dimethyloctyl iodide 4. The Wittig reaction of (3R,7R)-phosphonium salt 2 derived from (3R,7R)-27 and (S)-1 gave the olefin 28 which was subjected to catalytic hydrogenation to afford (2R,4'R,8'R)-α- tocopherol.

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