Chemical Name: 3,4-Dihydroxybenzoic acid 
Synonyms: Protocatechuic acid 
Molecular Structure:  
	
	
		Molecular Formula:  C7H6O4 
Molecular Weight:  154.12 
CAS#:  99-50-3 
EINECS:  202-760-0 
Melting point: 198-202 ?C
	
	
		Packing:25kg/drum or according to customer request.
	
	
		Uses: Intermediates of dye stuff and medical product.