Below is a group offer of Organic Intermediate.
Offer List
Tobias Acid (2-Amino-1-naphthalenesulfonic acid):
White crystal, melting point is 272º C. ...
[Expiration Date: 2010-05-25]
J Acid(2-Amino-5-naphthol-7-sulfonic acid)
The dry of J-acid is grey powder, difficultly soluble in water. ...
[Expiration Date: 2010-05-25]