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1243354-86-0

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1243354-86-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1243354-86-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,3,3,5 and 4 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1243354-86:
(9*1)+(8*2)+(7*4)+(6*3)+(5*3)+(4*5)+(3*4)+(2*8)+(1*6)=140
140 % 10 = 0
So 1243354-86-0 is a valid CAS Registry Number.

1243354-86-0Downstream Products

1243354-86-0Relevant articles and documents

Practical regioselective halogenation of vinylogous esters: Synthesis of differentiated mono-haloresorcinols and polyhalogenated resorcinols

Chen, Xiaohong,Liu, Xiaoguang,Martinez, Jenny S.,Mohr, Justin T.

, p. 3653 - 3665 (2016/06/06)

A practical and efficient method for the direct, regioselective conversion of vinylogous esters to haloresorcinols is reported. Control of the reaction conditions enables synthesis of either the 4- or 6-haloresorcinol isomers from a common precursor with excellent regiocontrol and high yield. The generality and functional group tolerance of this novel protocol is demonstrated. The utility of this methodology to access polyhaloresorcinols is also reported. These methods create useful functionalized building blocks for further synthetic applications.

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