124739-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 124739-89-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,7,3 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 124739-89:
(8*1)+(7*2)+(6*4)+(5*7)+(4*3)+(3*9)+(2*8)+(1*9)=145
145 % 10 = 5
So 124739-89-5 is a valid CAS Registry Number.
124739-89-5Relevant articles and documents
Study of trichloronitrosomethane: regioselective cycloadditions of 2-substituted-1,3-butadienes
Lin, Cheng-Tung,Hsu, Wen-Jei
, p. 2153 - 2161 (2007/10/02)
The regioselectivity of cycloaddition reactions of trichloronitrosomethane (1) with 2-alkyl (R=Me, Et, i-Pr, t-Bu, CF3, Bz, and Cl) and 2-aryl (Ar=Ph, 4-CH3OHPh, 4-CH3Ph, 3-CH3Ph, and 4-ClPh) 1,3-butadienes is described.The orientation of cycloaddition is