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113976-02-6

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113976-02-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 113976-02-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,9,7 and 6 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 113976-02:
(8*1)+(7*1)+(6*3)+(5*9)+(4*7)+(3*6)+(2*0)+(1*2)=126
126 % 10 = 6
So 113976-02-6 is a valid CAS Registry Number.

113976-02-6Relevant articles and documents

Synthesis and crystal structure of (4s)-4-benzyl-3-(4,5-dimethoxy-2-methylbenzoyl)- 2,2-dimethyl-1,3-oxazolidine

Chrzanowskak, Maria,Meissner, Zofia,Chrzanowska, Joanna M.,Gzella, Andrzej K.

, p. 730 - 739 (2015/03/04)

The synthesis of (4S)-4-benzyl-3-(4,5-dimethoxy-2-methylbenzoyl)- 2,2-dimethyl-1,3-oxazolidine 6 was performed in 7 steps starting from veratraldehyde 7. A new oxidizing system TBHP-ebselen 12 was used for oxidation of 4,5-dimethoxy-2-methylbenzaldehyde 11 into carboxylic acid 13, being the crucial step of the synthesis. The latter was transformed first to chiral amide 14 using (S)-phenylalaninol and then cyclised to oxazolidine 6. The spatial structure and the absolute configuration of the latter one was confirmed by X-ray study.

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