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121887-63-6

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121887-63-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121887-63-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,8,8 and 7 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 121887-63:
(8*1)+(7*2)+(6*1)+(5*8)+(4*8)+(3*7)+(2*6)+(1*3)=136
136 % 10 = 6
So 121887-63-6 is a valid CAS Registry Number.

121887-63-6Upstream product

121887-63-6Downstream Products

121887-63-6Relevant articles and documents

Metallacycle transfer from zirconium to main group elements: A versatile synthesis of heterocycles

Fagan, Paul J.,Nugent, William A.,Calabrese, Joseph C.

, p. 1880 - 1889 (2007/10/02)

The reaction of zirconium metallacycles is used to produce a variety of main group heterocycles including borole Diels-Alder dimers, galloles, indacyclopentadienes, siloles, germoles, stannoles, phospholes, arsoles, stiboles, bismoles, thiophenes, selenophenes, dihydrothiophenes, dihydroselenophenes, tetrahydrothiophenes, tetrahydro-selenophenes, stannacyclopentanes, phospholenes, and isothiazoles. An X-ray crytallographic study of the borole DielsAlder dimer of 1-phenyl-2,3,4,5-tetramethylborole is discussed and compared with the structure of 7-norbornenyl carbenium ions. The scope and potential for this metallacycle transfer reaction are delineated.

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