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66045-03-2

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66045-03-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66045-03-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,0,4 and 5 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 66045-03:
(7*6)+(6*6)+(5*0)+(4*4)+(3*5)+(2*0)+(1*3)=112
112 % 10 = 2
So 66045-03-2 is a valid CAS Registry Number.

66045-03-2Relevant articles and documents

One-pot synthesis of 3-hydroxyquinolin-2(1 H)-ones from N-phenylacetoacetamide via PhI(OCOCF3)2-mediated α-hydroxylation and H2SO4-promoted intramolecular cyclization

Yuan, Yucheng,Yang, Rui,Zhang-Negrerie, Daisy,Wang, Junwei,Du, Yunfei,Zhao, Kang

, p. 5385 - 5392 (2013/07/26)

A clean, one-pot synthesis of the biologically important 3-hydroxyquinolin-2(1H)-one compounds has been realized from the readily available N-phenylacetoacetamide derivatives through a PhI(OCOCF 3)2-mediated α-hydroxylation and a H 2SO4-promoted intramolecular condensation. The hydroxyl group in the generated α-hydroxylated intermediate can be well tolerated in the second H2SO4-promoted cyclization step.

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