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1421759-80-9

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1421759-80-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1421759-80-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,7,5 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1421759-80:
(9*1)+(8*4)+(7*2)+(6*1)+(5*7)+(4*5)+(3*9)+(2*8)+(1*0)=159
159 % 10 = 9
So 1421759-80-9 is a valid CAS Registry Number.

1421759-80-9Downstream Products

1421759-80-9Relevant academic research and scientific papers

A chemo-enzymatic route to differentially protected aryl-naphthalenes

Panja, Arpita,Ghosh, Deboki,Basak, Amit

, p. 893 - 896 (2013/03/13)

Aryl-naphthalene diacetates prepared from bispropargyl sulfones, ethers and amines via Garratt-Braverman Cyclization have been selectively hydrolysed by AK lipase to the monoacetates 12a-c in high yields. The regioisomeric mono acetates 13a-c have been prepared by acetylation of the corresponding diols using the same enzyme. In both cases, the more exposed acetoxymethyl or hydroxy methyl attached to the naphthalene ring binds to the active site of the enzyme and underwent hydrolysis/acetylation. The method provides easy access to differentially protected aryl-naphthalenes which should allow further modifications.

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