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1245740-46-8

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1245740-46-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1245740-46-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,5,7,4 and 0 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1245740-46:
(9*1)+(8*2)+(7*4)+(6*5)+(5*7)+(4*4)+(3*0)+(2*4)+(1*6)=148
148 % 10 = 8
So 1245740-46-8 is a valid CAS Registry Number.

1245740-46-8Downstream Products

1245740-46-8Relevant articles and documents

One-pot click synthesis of 1N-alkyl-4-aryl-1,2,3-triazoles from protected arylalkynes and alkyl bromides

Ladouceur, Sebastien,Soliman, Ahmed M.,Zysman-Colman, Eli

experimental part, p. 3604 - 3611 (2011/12/16)

1N-Alkyl-4-aryl-1,2,3-triazoles have been prepared through a multicomponent one-pot protocol from the corresponding (arylethynyl)trimethylsilanes and alkyl bromides. In situ alkyl azide formation and alkyne deprotection followed by copper(I)-catalyzed click cycloaddition afforded the desired 1,4-disubstituted 1,2,3-triazoles in generally good to excellent yield, with only minor observation of the undesired 1,5-regioisomeric cycloadduct. The protocol eliminates the need to use reactive organic azides and terminal alkynes. Georg Thieme Verlag Stuttgart. New York.

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