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(S)-2,3-dihydro-2-phenylspiro[4H-[1]benzopyran-4,2'-[1,3]dithiane] is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

475644-97-4

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475644-97-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 475644-97-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,5,6,4 and 4 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 475644-97:
(8*4)+(7*7)+(6*5)+(5*6)+(4*4)+(3*4)+(2*9)+(1*7)=194
194 % 10 = 4
So 475644-97-4 is a valid CAS Registry Number.

475644-97-4Downstream Products

475644-97-4Relevant academic research and scientific papers

Synthesis of both enantiomers of flavanone and 2-methylchromanone

Noda, Yoshihiro,Watanabe, Morio

, p. 3473 - 3477 (2007/10/03)

An efficient enantiospecific synthesis of the (R)- and (S)-enantiomers of flavanone and 2-methylchromanone is described. The key steps are a C,C-bond formation by ring opening of a chiral epoxide with a dithiane anion, followed by a Mitsunobu cyclization. The products obtained have high enantiomeric purity.

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