237391-52-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 237391-52-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,7,3,9 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 237391-52:
(8*2)+(7*3)+(6*7)+(5*3)+(4*9)+(3*1)+(2*5)+(1*2)=145
145 % 10 = 5
So 237391-52-5 is a valid CAS Registry Number.
237391-52-5Relevant academic research and scientific papers
Photochemical reaction of 1-phenylsulfonyltricyclo[4.1.0.02,7]heptane with benzenesulfonyl bromide
Vasin,Kostryukov,Rasin
, p. 1136 - 1142 (2007/10/03)
Phenylsulfonyltricyclo[4.1.0.02,7]heptane reacts with PhSO2Br under UV light to yield the products of sulfobromination and bromination in 3:1 ratio. Both addition processes are highly cis-stereo-selective. The structure of the bromin
