CERTIFICATE OF ANALYSIS

PRODUCT NAME: GADODIAMIDE           MANUFACTURE DATE: JUN.5,2006
BATCH NO.: 060605                               ANALYSIS DATE: JUN.7,2006
QUANTITY: 10KG

ITEM SPECIFICATION RESULT
APPEARANCE WHITE CRYSTALLINE POWDER WHITE CRYSTALLINE POWDER
IDENTIFICATION IR ABSORPTION CONFORM
CLARITY OF SOLUTION MEETS THE REQUIREMENT MEETS THE REQUIREMENT
WATER 3.0%-14.0% 8.63%
FREE GADOLINIUM 0.3% CONFORM
FREE DIETHYLENETRIAMINE PENTAACETIC ACID BISMETHYLAMIDE 0.7% CONFORM
METHYLAMINE 0.05% CONFORM
ACETONE

0.2%

CONFORM
ETHYL ALCOHOL
ISOPROPYL ALCOHOL
GADODIAMIDE RELATED COMPOUND A 2.0% CONFORM
GADODIAMIDE RELATED COMPOUND B
INDIVIDUAL IMPURITY 0.2% 0.15%
SUM OF IMPURITIES(OTHER THAN RELATED COMPOUND A AND B) 0.5% CONFORM
CONTENT OF GADOLINIUM 26%-29% ON ANHYDROUS BASIS 27.52%
ASSAY OF C16H26GdN5O8 97.0%-103.0% ON ANHYDROUS BASIS 98.5%

jnjz