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1027899-58-6

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1027899-58-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1027899-58-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,7,8,9 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1027899-58:
(9*1)+(8*0)+(7*2)+(6*7)+(5*8)+(4*9)+(3*9)+(2*5)+(1*8)=186
186 % 10 = 6
So 1027899-58-6 is a valid CAS Registry Number.

1027899-58-6Relevant articles and documents

Convenient one-pot method for the preparation of polysubstituted benzo[b]- and naphtho[1,2-b]-furans and -thiophenes

Katritzky, Alan R.,Serdyuk, Larisa,Xie, Linghong

, p. 1059 - 1064 (2007/10/03)

N-(Phenoxymethyl)- and N-(phenylthiomethyl)-benzotriazoles are versatile substrates for the preparation of benzofurans and benzothiophenes by insertion reactions of their anions into alkyl and aryl aldehydes and in situ cyclization of the α-aryloxy and α-arylthio ketones thus formed. N-(Naphthyloxy)- and N-(naphthylthio)-benzotriazoles are similarly efficient precursors for naphthofurans and naphthothiophenes.

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