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81955-02-4

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81955-02-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81955-02-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,5 and 5 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81955-02:
(7*8)+(6*1)+(5*9)+(4*5)+(3*5)+(2*0)+(1*2)=144
144 % 10 = 4
So 81955-02-4 is a valid CAS Registry Number.

81955-02-4Relevant articles and documents

DERIVATIVES OF SULFOXYLIC DIAMIDE

Pel'kis, N. P.,Levchenko, E. S.

, p. 1963 - 1967 (2007/10/02)

N,N'-Disubstituted sulfur diimides are reduced by the action of thiophenols to N,N'-disubstituted sulfoxylic diamides R1NHSNHR2.Compounds where R1 = R2 = SO2Ar, COPh enter readily into reaction both with retention and with cleavage of the S-N bond.In reaction with secondary amines and CH acids they are "carriers of sulfur." 2,5-Diaroyl-1,2,5-thiadiazolidine-3,4-diones are formed by the successive action of trimethylchlorosilane and oxalyl chloride on the compounds where R1 = R2 = COPh, COC6H4Cl-p.

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