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189330-04-9

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189330-04-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 189330-04-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,3,3 and 0 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 189330-04:
(8*1)+(7*8)+(6*9)+(5*3)+(4*3)+(3*0)+(2*0)+(1*4)=149
149 % 10 = 9
So 189330-04-9 is a valid CAS Registry Number.

189330-04-9Downstream Products

189330-04-9Relevant articles and documents

Synthesis of Norpinane and Tricyclo[4.1.0.02,7]heptane Derivatives from 1-Phenylthiotricyclo[4.1.0.02,7]heptane

Vasin,Razin,Kostryukov

, p. 1657 - 1666 (2007/10/03)

Radical addition of PhSO2Hlg (Hlg = Cl, Br) to 1-phenylthiotricyclo[4.1.0.02,7]heptane results in endo,syn-stereoselective splitting of the central bicyclobutane C1-C7 bond with formation of norpinane derivatives. The latter readily undergo substitution of the halogen by the action of nucleophiles (H2O, MeONa, PhSNa) and 1,3-dehydrohalogenation to 1-phenylsulfonyl-7-phenylthiotricyclo[4.1.0.02,7]heptane by the action of t-BuOK in THF. The stereoselective endo,syn addition of benzenesulfenyl chloride and benzeneselenol and also addition of benzenethiol in the presence of H2SO4 at the C1-C7 bond follows the Markownikoff rule. Acid-catalyzed hydration and bromohydroxylation with N-bromosuccinimide result in formation of 6-norpinanone derivatives.

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