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128650-74-8

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128650-74-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128650-74-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,5 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 128650-74:
(8*1)+(7*2)+(6*8)+(5*6)+(4*5)+(3*0)+(2*7)+(1*4)=138
138 % 10 = 8
So 128650-74-8 is a valid CAS Registry Number.

128650-74-8Downstream Products

128650-74-8Relevant articles and documents

TRIFLUORMETHYLIERUNGSREAKTIONEN VON Te(CF3)2 MIT HALOGENBENZOLEN UND METHYLBENZOLEN

Naumann, Dieter,Kischkewitz, Jurgen

, p. 283 - 299 (2007/10/02)

Substituent effects on yields and regioselectivity of photochemical and thermal trifluoromethylation reactions of Te(CF3)2 with halogen benzenes and methyl benzenes are investigated under comparable conditions.All reactions lead to trifluoromethylated products.The yields of the thermal are always higher than those of the corresponding photochemical reactions.The reactivity of the halobenzenes increases in the series C6H5-F a sidereaction, but H-substitution is the primary reaction pathway.During the reactions with iodobenzene tellurium containing compounds are also formed.The reactions with methyl benzenes show an increase in reactivity in the series hexamethylbenzene mesitylene toluene p-xylene.In all cases only ring substituted products are detected.Reactions with toluene and p-xylene yield tellurium containing compounds as well as addition products.The 19F-n.m.r spectra of the products are given.

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