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72740-06-8

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72740-06-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72740-06-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,7,4 and 0 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 72740-06:
(7*7)+(6*2)+(5*7)+(4*4)+(3*0)+(2*0)+(1*6)=118
118 % 10 = 8
So 72740-06-8 is a valid CAS Registry Number.

72740-06-8Relevant articles and documents

UEBER DIE INSERTION VON RPS2 IN DIE PN-BINDUNG VON AMINOPHOSPHINEN

Diemert, K.,Hein, G.,Janssen, A.,Kuchen, W.

, p. 339 - 356 (2007/10/02)

Aminophosphines RnP(NR'2)3-n (n = 2, 1, 0; R = Ph, c-Hex, (-)Men, t-Bu; R' = Me, Et, n-Bu) react with 2,4-Bis(aryl)-1,3,2,4-dithiadiphosphetane-2,4-disulfides (ArPS2) (Ar: Ph, 4-Methoxyphenyl = An, Naphthyl, Thienyl) under formal insertion of monomeric (ArPS2)-units in one or in two of the λ3-P-N-bonds to yield chiral organophosphorus compounds Ar(R'2N)P(S)-S-PRn(NR'2)2-n (n = 2, 1, 0) and 2PRn(NR'2)1-n (n = 1, 0).At room temperature chiefly the λ3-P-N and λ3-P-S bonds in these products are solvolyzed by H2O or methanol with formation of mixtures of compounds.With hydrogen chloride An(Et2N)P(S)-S-PPh(NEt2) is converted into An(Et2N)P(S)-S-PPh(Cl).Addition of sulfur yields Ar(R'2N)P(S)-S-P(S)Rn(NR'2)2-n (n = 2, 1).Stereoisomerism of the new compounds is discussed and their structures as well as the composition of reaction mixtures are deduced from 31P-NMR-spectra.

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