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1289154-80-8

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1289154-80-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1289154-80-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,9,1,5 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1289154-80:
(9*1)+(8*2)+(7*8)+(6*9)+(5*1)+(4*5)+(3*4)+(2*8)+(1*0)=188
188 % 10 = 8
So 1289154-80-8 is a valid CAS Registry Number.

1289154-80-8Relevant articles and documents

Synthesis of 5-(2-methoxy-1-naphthyl)- and 5-[2- (methoxymethyl)-1- naphthyl]-11H-benzo[b]fluorene as 2,2'-disubstituted 1,1'-binaphthyls via benzannulated enyne-allenes

Wang, Yu-Hsuan,Bailey, Joshua F.,Petersen, Jeffrey L.,Wang, Kung K.

experimental part, p. 496 - 502 (2011/06/20)

5-(2-Methoxy-1-naphthyl)- and 5-[2-(methoxymethyl)-1-naphthyl]-11H-benzo[b] fluorene were synthesized by treatment of the corresponding benzannulated enediynes with potassium tert-butoxide in refluxing toluene to give benzannulated enyne-allenes for the subsequent Schmittel cascade cyclization reactions. The structures of these two 5-(1-naphthyl)-11H-benzo[b]fluorenes could be regarded as 2,2′-disubstituted 1,1′-binaphthyls with the newly constructed benzofluorenyl group serving as a naphthyl moiety.

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