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90311-23-2

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90311-23-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90311-23-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,3,1 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 90311-23:
(7*9)+(6*0)+(5*3)+(4*1)+(3*1)+(2*2)+(1*3)=92
92 % 10 = 2
So 90311-23-2 is a valid CAS Registry Number.

90311-23-2Relevant articles and documents

A NEW SIMPLE METHOD FOR THE PRODUCTION AND SOME CONVERSIONS OF B-S BOND-CONTAINING o- AND m-CARBORANYL

Zakharkin, L. I.,Pisareva, I. V.

, p. 357 - 370 (2007/10/02)

A new method of synthesis of o- and m-carboranyl-B-thiols and o- and m-carboranyl-B,B'-dithiols via the electrophilic sulfuration of o-, m-carboranes with S2Cl2 in the presence of AlCl3 is described.The reaction of o-carborane with excess S2Cl2 in the presence of AlCl3 gives B,B',B'',B'''-tetrathiol-o-carborane.Various chemical conversions of carborane sulfur derivatives are studied.A description is made of carbonyl derivatives of di-, tetra- and hexavalent sulfur, such as sulfenyl chlorides, thiocyanates, disulfides, alkyl- and aryl sulfides, aryl sulfones and aryl sulfoxides. 9-m-Carboranylsulfinic acid was found to readily disproportionate to thiosulfonate and sulfonic acid.The chemical behaviour of o- and m-carboranyl sulfur derivatives in which the sulfur is ?-bound to the six-coordinated boron atom was also found to be similar to that of organic sulfur derivatives.

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