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1630732-32-9

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1630732-32-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1630732-32-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,0,7,3 and 2 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1630732-32:
(9*1)+(8*6)+(7*3)+(6*0)+(5*7)+(4*3)+(3*2)+(2*3)+(1*2)=139
139 % 10 = 9
So 1630732-32-9 is a valid CAS Registry Number.

1630732-32-9Downstream Products

1630732-32-9Relevant articles and documents

A versatile synthesis of bis[2-(2'-hydroxylphenyl)benzoxazole] derivatives as zinc sensors

Wang, Junfeng,Pang, Yi

, p. 10208 - 10212 (2013/09/02)

A versatile synthetic route has been developed to prepare 2, 5-bis(benzoxazole-2-yl)benzene-1,4-diol derivatives 2. Although one of the derivatives (2b) has recently been shown to exhibit an excellent response to Zn2+ cations, the low yielding synthetic route will likely prevent its wide application. This report describes an improved synthetic procedure to obtain 2, thereby making this class of compounds available for biologically relevant studies. An effective synthesis has been developed for 2-aminophenol derivative 6, which bears a carboxylate group in the desired position. The strategy allows construction of bis(benzoxazole) compound 5, where the built-in ester group can be easily converted to either a hydroxymethyl or a bromomethyl group to introduce the zinc-chelating ligand. The Royal Society of Chemistry 2013.

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