133640-54-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133640-54-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,6,4 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 133640-54:
(8*1)+(7*3)+(6*3)+(5*6)+(4*4)+(3*0)+(2*5)+(1*4)=107
107 % 10 = 7
So 133640-54-7 is a valid CAS Registry Number.
133640-54-7Relevant academic research and scientific papers
Reaction of t-butylmagnesium chloride with 1,4-dinitrobenzene
Dalpozzo,Grossi,Ganazzoli
, p. 1091 - 1094 (2007/10/02)
Whereas alkyl Grignard reagents generally react with 1,4-dinitrobenzene leading to redox or ring-alkylated products, t-butylmagnesium chloride gives substitution to the para position and/or 1,2 addition to the nitro group. Detailed ESR studies of the reaction are reported
