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81730-76-9

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81730-76-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81730-76-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,3 and 0 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 81730-76:
(7*8)+(6*1)+(5*7)+(4*3)+(3*0)+(2*7)+(1*6)=129
129 % 10 = 9
So 81730-76-9 is a valid CAS Registry Number.

81730-76-9Downstream Products

81730-76-9Relevant articles and documents

UNSATURATED THIOLATES AND THEIR ANALOGS IN CYCLOADDITION REACTIONS XI. EFFECT OF SUBSTITUENTS AT THE β POSITION OF ETHENETHIOLATES ON THE DIRECTION OF REACTION WITH CARBON BISULFIDE

Bobylev, V. A.,Petrov, M. L.,Petrov, A. A.

, p. 239 - 245 (2007/10/02)

1-Dialkylamino-, 1-alkylarylamino-, and 1-cycloalkylaminoethenethiolates react with carbon bisulfide in various directions, depending on the nature of the substituents at the position 2.In all cases 1,2-dithiole-3-thiones are formed.Thiolates unsubstituted at position 2 give, in addition, 5,5'-bis(dialkylamino)-, 5,5'-bis(alkylarylamino)-, and 5,5'-bis(cycloalkylamine)-1,1',2,2'-tetrathiafulvalenes.In the case of potassium 1-morpholino-2-tert-butylethenethiolate the reaction is accompanied by the elimination of a molecule of morpholine and by the formation of 4-tert-butyl-1,2-dithiole-3-thione.In the presence of a weak proton donor (acetonitrile) ethylenethiolates substituted at position 2 react normally, but the 1-piperidinoethenethiolate gives mainly N,N-pentamethylenetrithiomalonamide.

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