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Ponceau 4R

CAS No. 2611-82-7

Chemical Formula : C20H11N2Na3O10S3

STD No. 6160P
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Ponceau 4R Impurity 1

CAS No. 130-13-2

Chemical Formula : C10H8NNaO3S

STD No. 61601P
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Ponceau 4R Impurity 2

CAS No. 842-18-2

Chemical Formula : C10H6K2O7S2

STD No. 61602P
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Ponceau 4R Impurity 3

CAS No. 135-51-3

Chemical Formula : C10H6Na2O7S2

STD No. 61603P
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Ponceau 4R Impurity 4

CAS No. 135-76-2

Chemical Formula : C10H7NaO4S

STD No. 61604P
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