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887642-50-4

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887642-50-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 887642-50-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,7,6,4 and 2 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 887642-50:
(8*8)+(7*8)+(6*7)+(5*6)+(4*4)+(3*2)+(2*5)+(1*0)=224
224 % 10 = 4
So 887642-50-4 is a valid CAS Registry Number.

887642-50-4Downstream Products

887642-50-4Relevant articles and documents

Asymmetric aerobic oxidation of α-hydroxy acid derivatives catalyzed by reusable, polystyrene-supported chiral N-salicylidene oxidovanadium tert-leucinates

Salunke, Santosh B.,Babu, N.Seshu,Chen, Chien-Tien

, p. 1234 - 1240 (2011)

The direct immobilization of two different C-5-propargyl ether-modified, chiral N-salicylidene vanadyl(V) tert-leucinates onto 4-azidomethyl-substituted polystyrene by click chemistry was examined. Among the eight different solvents investigated, the resulting polystyrene-supported catalysts promote the asymmetric, aerobic oxidation of α-hydroxy (thio)esters and amides with enantioselectivities of up to 99% ee (selectivity factor up to 41) in chloroform. These polystyrene-supported catalysts can be readily recovered by filtration and reused for at least four consecutive runs without discernible loss of reactivity and enantioselectivity.

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