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1839120-27-2

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1839120-27-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1839120-27-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,8,3,9,1,2 and 0 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1839120-27:
(9*1)+(8*8)+(7*3)+(6*9)+(5*1)+(4*2)+(3*0)+(2*2)+(1*7)=172
172 % 10 = 2
So 1839120-27-2 is a valid CAS Registry Number.

1839120-27-2Relevant articles and documents

PREPARATION OF SUBSTITUTED 3-ARYL-5-TRIFLUOROMETHYL-1,2,4-OXADIAZOLES

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, (2021/08/14)

The present invention relates to a process for the preparation of substituted 3-aryl-5- trifluoromethyl-1,2,4-oxadiazoles of formula (I), which can be obtained through reaction of amidoxime compounds of formula (II) with a haloacetic ester in the presence of a base.

PREPARATION OF SUBSTITUTED AROMATIC CARBOXAMIDES

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Page/Page column 14, (2021/06/11)

The present invention relates to a process for the preparation of substituted aromatic carboxamides of formula I, (formula I) which can be obtained through reaction of an aromatic carboxylic acid halide and an amine, whereas the process is conducted in the absence of an auxiliary base in a carboxylic acid ester as solvent.

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