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1403457-44-2

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1403457-44-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1403457-44-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,0,3,4,5 and 7 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1403457-44:
(9*1)+(8*4)+(7*0)+(6*3)+(5*4)+(4*5)+(3*7)+(2*4)+(1*4)=132
132 % 10 = 2
So 1403457-44-2 is a valid CAS Registry Number.

1403457-44-2Downstream Products

1403457-44-2Relevant articles and documents

Bromination of phenols in bromoperoxidase-catalyzed oxidations

Wischang, Diana,Hartung, Jens

, p. 9456 - 9463 (2012/11/07)

Phenol and ortho-substituted derivatives furnish products of selective para-bromination, if treated with sodium bromide, hydrogen peroxide, and the vanadate(V)-dependent bromoperoxidase I from the brown alga Ascophyllum nodosum. Relative rates of bromination in morpholine-4-ethane sulfonic acid (MES)-buffered aqueous tert-butanol (pH 6.2) increase by a factor 32, as the ortho-substituent in a phenol changes from F via Cl, OCH3, C(CH 3)3, and H to CH3. The polar effect in phenol bromination by the enzymatic method, according to a Hammett-correlation (ρ=-3), compares to reactivity of molecular bromine under identical conditions (ρ=-2). Hypobromous acid is not able to electrophilically substitute bromine for hydrogen at pH 6.2 in aqueous tert-butanol. The tribromide anion behaves in MES-buffered aqueous tert-butanol as electrophile (ρ~-3), showing a similar polar effect in phenol bromination as molecular bromine.

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