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74121-39-4

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74121-39-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74121-39-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,2 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 74121-39:
(7*7)+(6*4)+(5*1)+(4*2)+(3*1)+(2*3)+(1*9)=104
104 % 10 = 4
So 74121-39-4 is a valid CAS Registry Number.

74121-39-4Upstream product

74121-39-4Downstream Products

74121-39-4Relevant articles and documents

HIGH - TEMPERATURE ORGANIC SYNTHESIS. XIII. THE REACTIONS OF HYDROGEN SULFIDE WITH 1,2-DICHLOROETHYLENE

Perevalova, V. I.,Bannikova, O. B.,Deryagina, E. N.,Voronkov, M. G.

, p. 355 - 361 (2007/10/02)

1,2-Dichloroethylene reacts with hydrogen sulfide in the gas phase at 420 - 520 deg C in an empty quartz tube, forming bis(β-chlorovinyl)sulfide (geometric isomers), 2- and 3-chlorothiophene, 2,4-dichlorothiophene, 2- and 3-thienyl β-chlorovinyl sulfides (cis and trans isomers), cis-4-chloro-2-thienyl β-chlorovinyl sulfide, and thieno- and thienothiophenes.The yields of these compounds depend on the reaction conditions (temperature, contact time, ratio of initial reagents).At 480 deg C in an excess of 1,2-dichloroethylene the yield of the mixture of2- and 3-chlorothiophene amounts to 25percent (ratio 3 : 1).

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