Glutathione CAS:70-18-8

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1 Kilogram	FOB Price: USD 1.0000

1 Kilogram

FOB Price: USD 1.0000

Glutathione gamma-L-Glutamyl-L-cysteinylglycine CAS:70-18-8

Test Items		Specifications	Results
Appearance		White or almost white, crystalline powder or colourless crystals	White crystalline powder
Solubility		freely soluble in water, very slightly solublie in ethanol and in methylene chloride	Complies
Identification	S.O.R.	-15.5°~-17.5°	-15.6°
	Infrared	Conforms to the Reference Spectrum	Conforms to the Reference Spectrum
Appearance of solution		Clear and colourless	Clear and colourless
Specific optical rotation		-15.5°~-17.5°	-15.6°
Related substances:
- Impurity A (L-cysteinylglycine)		Not more than 0.5%	<0.05%
- Impurity B (Cysteine)		Not more than 0.5%	<0.05%
- Impurity C (L-glutathione oxidised)		Not more than 1.5%	0.12%
- Impurity D(L-γ-glutamyl-L-cysteine)		Not more than 1.0%	0.31%
-Impurity E (Product of degradation)		Not more than 0.5%	0.05%
- Total Impurities		Not more than 2.5%	0.58%
Chlorides		Maximum 200 ppm	Complied
Sulphates		Maximum 300 ppm	Complied
Ammonium		Maximum 200 ppm	Complied
Iron		Not more than 10 ppm	Complied
Heavy Metals		Not more than 10 ppm	Complied
Loss on drying		Maximum 0.5%	0.4%
Sulfated ash		Maximum 0.1%	0.04%
Bacterial Endotoxin		Not more than 0.10EU/mg	Complied
Assay		98.0% to 101.0%	99.3%
Conclusion		Complies with the standard of European Pharmacopoeia 10.0