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87231-13-8

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87231-13-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87231-13-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,3 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87231-13:
(7*8)+(6*7)+(5*2)+(4*3)+(3*1)+(2*1)+(1*3)=128
128 % 10 = 8
So 87231-13-8 is a valid CAS Registry Number.

87231-13-8Downstream Products

87231-13-8Relevant articles and documents

Regiochemistry and reactivity in the chlorination of sulfides

Hancock, James Reid,Hardstaff, William Rayne,Johns, Paul Alan,Langler, Richard Francis,Mantle, William Stanley

, p. 1472 - 1480 (2007/10/02)

Huheey's original method for the calculation of substituent electronegativities is modified so that isomeric groups have different electronegativities.The modified form of Huheey's method is then employed to show that our previously published method for anticipating regiochemistry in asymmetric sulfide chlorination, i.e., ΔXP calculations for the α and α' substituents in the sulfide substrates, is successful in all fifty known cases.A new reactivity function (RP) is defined, for the sulfenium ion intermediates, which permits one to anticipate when substrates become inert to chlorine in exhaustive chlorinations conducted in aprotic media.

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