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1277176-12-1

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1277176-12-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1277176-12-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,7,1,7 and 6 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1277176-12:
(9*1)+(8*2)+(7*7)+(6*7)+(5*1)+(4*7)+(3*6)+(2*1)+(1*2)=171
171 % 10 = 1
So 1277176-12-1 is a valid CAS Registry Number.

1277176-12-1Relevant articles and documents

Synthesis of the azaphilones (+)-sclerotiorin and (+)-8- O -methylsclerotiorinamine utilizing (+)-sparteine surrogates in copper-mediated oxidative dearomatization

Germain, Andrew R.,Bruggemeyer, Daniel M.,Zhu, Jianglong,Genet, Cedric,O'brien, Peter,Porco, John A.

, p. 2577 - 2584 (2011)

Enantioselective syntheses of the azaphilone natural products (+)-sclerotiorin and (+)-8-O-methylsclerotiorinamine that possess the natural R-configuration at the quaternary center are reported. The syntheses were accomplished using copper-mediated asymmetric dearomatization employing bis-i-oxo copper complexes prepared from readily available (+)-sparteine surrogates. Of note, site-selective O-methylation of a vinylogous pyridone was used to access the isoquinolin-6(7H)-one core of (+)-8-O- methylsclerotiorinamine.

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