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863033-41-4

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863033-41-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 863033-41-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,3,0,3 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 863033-41:
(8*8)+(7*6)+(6*3)+(5*0)+(4*3)+(3*3)+(2*4)+(1*1)=154
154 % 10 = 4
So 863033-41-4 is a valid CAS Registry Number.

863033-41-4Relevant articles and documents

Advantages of the Ns group in the reactions of N1-SO 2R inosines with benzylamine and with 15NH3

Terrazas, Montserrat,Ariza, Xavier,Vilarrasa, Jaume

, p. 5127 - 5130 (2007/10/03)

The reactivity of N1-alkylsulfonyl- and N1- arylsulfonyl-2′,3′,5′-tri-O-acetylinosine with benzylamine and with 15NH3, regarding the attack on C2, has been shown to be in the order CF3SO2 (Tf) > 2,4-(NO 2)2C6H3SO2 (DNs) ≥ 4-NO2C6H4SO2 (pNs) ≈ C 6F5SO2 (PFBs) > 2-NO2C 6H4SO2 (Ns) ? CH3SO2 (Ms) > 4-CH3C6H4SO2 (Ts) > 2,4,6-(CH3)3C6H2SO2 (Mts). In spite of its intermediate reactivity, the Ns group is the most appropriate, since in this case the formation of by-products is minimised during the ring-opening and ring-closing steps of the process. Another advantage of the Ns group is thus disclosed.

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