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81583-38-2

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81583-38-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81583-38-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,8 and 3 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81583-38:
(7*8)+(6*1)+(5*5)+(4*8)+(3*3)+(2*3)+(1*8)=142
142 % 10 = 2
So 81583-38-2 is a valid CAS Registry Number.

81583-38-2Relevant articles and documents

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

FREE-RADICAL ADDITION OF ARENESULFONYL HAIDES TO TRICYCLO2,7>HEPTANE

Vasin, V. A.,Bolusheva, I. Yu.,Chernyaeva, L. A.,Tanaselchuk, B. S.,Surmina, L. S.,Zefirov, N. S.

, p. 1302 - 1307 (2007/10/02)

The photochemical addition of arenesulfonyl halides ArSO2X (Ar = C6H5, p-CH3C6H4 and X = Cl, Br, I) to tricyclo2,7>heptane takes place at the central bicyclobutane C-C bond and leads to the formation of a mixture of syn and anti adducts

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