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213776-53-5

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213776-53-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 213776-53-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,7,7 and 6 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 213776-53:
(8*2)+(7*1)+(6*3)+(5*7)+(4*7)+(3*6)+(2*5)+(1*3)=135
135 % 10 = 5
So 213776-53-5 is a valid CAS Registry Number.

213776-53-5Downstream Products

213776-53-5Relevant articles and documents

New Enzyme Models of Chloroperoxidase: Improved Stability and Catalytic Efficiency of Iron Porphyrinates Containing a Thiolato Ligand

Wagenknecht, Hans-Achim,Claude, Cécile,Woggon, Wolf-Dietrich

, p. 1506 - 1520 (1998)

The heme-thiolate protein chloroperoxidase (CPO) catalyzes the chlorination of activated C-H bonds. A reaction mechanism is proposed for this enzymatic transformation (Scheme 1), and a new iron(III) porphyrinate complex 13 is synthesized containing pentafluorophenyl groups at two meso-positions and a thiophenolato ligand coordinating to the Fe-atom (Schemes 2 and 3). Due to the presence of the electron-withdrawing substituents, the catalyst 13 is appreciably resistant to oxidants (HOCl) and chlorinates, e.g., monochlorodimedone (5), with turnover numbers up to 1530. The redox potential of 13, E0 = - 134 mV, and the Soret band (λmax 448 nm) of the CO adduct of the reduced state of 13 are close to the corresponding values of the enzyme CPO.

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