Fine chemicals
Naphthaldehyde compounds
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- 1-Naphthaldehyde（1-naphthalenecarbaldehyde）
- 2-Hydroxy-1-naphthaldehyde（2-Naphthol-1-carbaldehyde）
Triazole compounds
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- Nitrobenzotriazole
- 4-Nitrobenzotriazole
- 5-Nitrobenzotriazole
Sulfonlc acids compounds
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- Aliphatic sulfonic acids
- Aromatic sulphonic acid
- Heterocyclic sulphonic acid
- Various sulfonate
