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370558-21-7

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370558-21-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 370558-21-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,7,0,5,5 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 370558-21:
(8*3)+(7*7)+(6*0)+(5*5)+(4*5)+(3*8)+(2*2)+(1*1)=147
147 % 10 = 7
So 370558-21-7 is a valid CAS Registry Number.

370558-21-7Relevant articles and documents

Candida antarctica lipase-B-catalyzed kinetic resolution of 1,3-dialkyl-3-hydroxymethyl oxindoles

Kumar, Naveen,Kumar, Akshay,Sahoo, Subash Chandra,Chimni, Swapandeep Singh

, p. 1377 - 1394 (2020/11/23)

Candida antarctica (CAL-B) lipase-catalyzed resolution of 1,3-dialkyl-3-hydroxymethyl oxindoles has been performed to obtain (R)-1,3-dialkyl-3-acetoxymethyl oxindoles with up to 99% ee and (S)-1,3-dialkyl-3-hydroxymethyl oxindoles with up to 78% ee using vinyl acetate as acylating agent and acetonitrile as solvent transforming (S)-3-allyl-3-hydroxymethyl oxindole to (3S)-1′-benzyl-5-(iodomethyl)-4,5-dihydro-2H-spiro[furan-3,3′-indolin]-2′-one. The optically active 3-substituted-3-hydroxymethyl oxindoles and spiro-oxindoles are among the key synthons in the synthesis of potentially biologically active molecules.

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