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98-21-5

3-amino-5-chloro-benzenesulfonic acid is an organic compound with the chemical formula C6H6ClNO3S. It is a derivative of benzenesulfonic acid, featuring an amino group at the 3-position and a chloro group at the 5-position. 3-amino-5-chloro-benzenesulfonic acid is a white crystalline solid that is soluble in water and has a molecular weight of 205.64 g/mol. It is primarily used as an intermediate in the synthesis of various pharmaceuticals, dyes, and other chemical products. Due to its reactivity and functional groups, it can undergo a range of chemical reactions, making it a versatile building block in organic chemistry.

98-21-5

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98-21-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 98-21-5 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 9 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 98-21:
(4*9)+(3*8)+(2*2)+(1*1)=65
65 % 10 = 5
So 98-21-5 is a valid CAS Registry Number.

98-21-5Relevant articles and documents

Barium laked phenylazonaphthalene dye containing sulfonic acid groups

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, (2008/06/13)

Azo dyes containing sulfonic acid groups laked with barium and derived from an anilinesulfonic acid as diazo component and a β-naphtholsulfonic acid as coupling component for example a dye of the formula STR1 The dyes are eminently suitable as pigments for coloring surface coating compositions, printing inks and particlarly resins.

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