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74571-81-6

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74571-81-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74571-81-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,5,7 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 74571-81:
(7*7)+(6*4)+(5*5)+(4*7)+(3*1)+(2*8)+(1*1)=146
146 % 10 = 6
So 74571-81-6 is a valid CAS Registry Number.

74571-81-6Relevant articles and documents

meta-Bromination of Phenols in Superacids

Jacquesy, Jean-Claude,Jouannetaud, Marie-Paule,Makani, Siki

, p. 110 - 111 (1980)

In SbF5-HF, para-alkylated or 2,6-dialkylated phenols (and their ethers) react with bromine to give the corresponding meta-bromo-substituted compounds; the mechanism implies bromination of the O-protonated substrate.

4,5-DISUBSTITUTED-2-ARYL PYRIMIDINES

-

, (2008/06/13)

4,5-disubstituted-2-arylpyrimidines of Formula (I) and Formula (II) are provided: wherein R1, R2, R3, R8, R9, A and Ar are defined herein. Such compounds are ligands of C5a receptors. Preferred compounds of Formula I and II bind to C5a receptors with high affinity and exhibit neutral antagonist or inverse activity at C5a receptors. The present invention also relates to pharmaceutical compositions comprising such compounds, and to the use of such compounds in treating a variety of inflammatory, cardiovascular, and immune system disorders. In addition, the present invention provides labeled 4,5-disubstituted-2-arylpyrimidines, which are useful as probes for the localization of C5a receptors.

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