3,4-dihydroxyphenylpropionic acid CAS NO.1078-61-1

Product name:	3,4-dihydroxyphenylpropionic acid
Synonyms:	3-(3,4-DIHYDROXYPHENYL)PROPIONIC ACID
CAS NO.:	1078-61-1
MF:	C₉H₁₀O₄
MW:	182.17
Purity:	99%+
Application	Dihydrocaffeic Acid is a natural product containing a catechol group with an α,β-unsaturated carboxylic acid chain. Dihydrocaffeic Acid has been shown to have hepatoprotective activity. Dihydrocaffei c Acid is a metabolite of Caffeic Acid (C08000) with potent antioxidant properties.

Item	Standard		Test Results
Identification	A.H-NMR:Comply with the structure		Complies
	B.LC-MS:Comply with the structure		Complies
	C.The IR spectrum of sample should be identical with that of reference standard;		Complies
	D.HPLC-ESI-MS		Complies
	The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation, as obtained in the Assay.
Heavy metals	≤10 ppm		<10ppm
Water	≤1.0%		0.10%
Sulphated ash	≤0.5%, determined on 1.0 g.		0.01%
Related substances	Unspecified impurities: for each impurity	≤0.10%	<0.10%
	Total Impurity	≤0.5%	0.18%
Purity	≥99.0%		99.70%
Assay	99.0%~101.0% (anhydrous substance).		99.80%
Storage	Preserve in well-closed, light-resistant and airtight containers.		Complies