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3,5-dibromosalicylic acid is an organic compound characterized by the chemical formula C7H4Br2O3. It is a derivative of salicylic acid, where two bromine atoms are substituted at the 3rd and 5th carbon positions. This white crystalline solid is a precursor in the synthesis of various pharmaceuticals and chemical intermediates. It is used in the production of antipyretic and analgesic drugs, as well as in the manufacture of dyes and other specialty chemicals. Due to its reactivity, 3,5-dibromosalicylic acid is also employed in organic synthesis for the preparation of other brominated compounds.

1666-27-9

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1666-27-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1666-27-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,6 and 6 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1666-27:
(6*1)+(5*6)+(4*6)+(3*6)+(2*2)+(1*7)=89
89 % 10 = 9
So 1666-27-9 is a valid CAS Registry Number.
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