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Name：Tobias acid

Molecular formula：C₁₀H₉NO₃S

Molecular weight：223.25

Structural formula：

CAS NO：81-16-3

Specifications：

Appearance：White to light pink powder.

Purpose：This product is an intermediate of azo dyes, used for the manufacture of J acid and gamma-acid, chromophenol AS-SW, reactive red K-1613, organic amaranth, Risol amaranth and Risol red.