Assay ≥98.0% Insoluble ≤0.2% Free water

Appearance White crystal Assay 98% min PH 4.2-4.6 Loss on drtate 16-17.5% (max) Phosphite 1.0%（max） Aminobutyric acid 0.5%（max） Ethanol 0.5%（max）

Appearance White powder Assay 95%min Water 0.5% max PH 7-9 Insolubilities in acetone ≤0.5%

"Appearance Off-white powder Assay 98% min Water insoluble 0.5% max Acid degree 0.3% max Acetone insolubles 0.3% max "

Appearance Yellow crystalline powder Identification 1. HPLC: the retention time of the major peak corresponds to that of the standard sample 2. IR: the infrared absorption time spectrum exhibits maximum only at the same as that of the standard sample 3. It gives reaction of chlorides Water content ≤1.0% UV purity ratio ≥4.5 Trichloroammine platinate ≤1.0% Transplatin ≤2.0% Platinum content 64.42%-65.22% Assay( HPLC) 98.0%-102.0% Packing and Storage Preserve in tight containers, protected from light.

Appearance White to off white powder Assay, HPLC 98.0%min Identification IR, HPLC Specific rotation (20/D) -7.0°~ -13° Impurities Total: 1.0% max Individual impurity: 0.5% max Loss on drying 0.5% max metals 0.002% max Bacterial Endotoxins 0.36% max Enantiomeric 2.0%max

Appearance White crystalline powder Identification Positive Color of solution Clear, GY4 max Assay 99-100.5% PH 8.0-9.5 Related substances One: 0.5% max Others: 0.25% max Sulphate 0.02% max metals 0.002% max Selenium 0.003% max Solubility Easily soluble in water,slightly soluble in ethyl alcohol Water 6.0-8.0%

Appearance white or almost white crystalline Assay, （AgNO3 Titration method） ≥98.0% Identification A:Developing colour reaction: Crroesponds B:Developing colour reaction: Crroesponds C: Developing colour reaction: Crroesponds Acidity(PH) 6.0-7.0 Water 6.0%max Residue on igition Max 0.5% Microbial potency(anhydrous) 780u/mg

Appearance A white or light yellow powder, odorless, hygroscpic Identification A,B,C The positive reaction Soluility Very soluble in water, insoluble in acetone,chloroform,ether PH 5.5-7.5 Loss on drying 8.0% max Assay 600 I.U/mg min(dry)

Appearance White crystalline powder Assay 99.0-100.5%min Melting point 128-132℃ Specific optical rotation -15.7˚~-17.3˚ Residue on ignition 0.1% max Loss on drying 0.5%max metals 20ppm max Absence of reducing substance Accords with the specification Clarity and color of the solution Accords with the specification

Appearance white crystalline powder Optical Rotation -96˚~~ -106˚ metals Not more than 10ppm Arsenic Not more than 2ppm Loss on drying Not more than 5% Residue on Ignition Not more than 0.5% Assay Not less than 98.0%

Appearance A white crystalline powder Assay 98.0% to 101.0% Melting point About 185℃ Identification IR Similar with the Reference Spectrum Optical Rotation -15.5°～-17.5° Clearity and color of solution Clear and colourless Metals Not more than 10ppm Arsenic Not more than 2ppm Related Substances Total Not more than 2.0% GSSG Not more than 1.5% Loss on Drying Not more than 0.5% Residue on Ignition Not more than 0.1%