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13207-43-7

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13207-43-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13207-43-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,2,0 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 13207-43:
(7*1)+(6*3)+(5*2)+(4*0)+(3*7)+(2*4)+(1*3)=67
67 % 10 = 7
So 13207-43-7 is a valid CAS Registry Number.

13207-43-7Relevant articles and documents

Synthesis of 1-Aryl-3-trifluoromethyl-5-methylthio-1,2,4-triazoles From 2-Arylmethylisothiosemicarbazides and 1,1,1-Trichloro-3,3,3-trifluoroacetone

Pilgram, Kurt H.,Skiles, Richard D.

, p. 1533 - 1537 (2007/10/02)

The reaction of 1,1,1-trichloro-3,3,3-trifluoroacetone with S-methyl-2-arylthiosemicarbazides affords an unusual synthesis of 1-aryl-3-trifluoromethyl-5-methylthio-1,2,4-triazoles from which 1-aryl-3-trifluoromethyl-1,2,4(4H)-triazole-5-ones are obtained on treatment with base.

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