99% up 2-Amino-3-(4-hydroxyphenyl)-L-Alanine L-Tyrosine 60-18-4

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25 Kilogram	Negotiable

25 Kilogram

Negotiable

2-Amino-3-(4-hydroxyphenyl)-L-Alanine L-Tyrosine L-Tyr

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Product Name: H-Tyr-OH

CAS#: 60-18-4

Synonyms: L-Tyrosine

Molecular Formula: C9H11NO3

Molecular Weight: 181.19

Specifications: (Reference standard: AJI92)

Item	Standard	Analysis data
Appearance	White crystals or crystalline powder	Conforms
Specific rotation[α]20/D (C=5,1mol/L HCL)	-11.3 to -12.1°	-11.47°
State of solution (Transmittance)	Not less than 95.0%	96．5%
Chloride (Cl)	Not more than 0.020%	0.01%
Ammonium (NH4)	Not more than 0.02%	0.01%
Sulfate (SO4)	Not more than 0.020%	0.008%
Iron (Fe)	Not more than 20ppm	8ppm
Heavy metal(Pb)	Not more than 10ppm	6ppm
Arsenic(As2O3)	Not more than 1ppm	<1ppm
Other amino acids	Chromatographically Not detectable	Conforms
Loss on drying	Not more than 0.20%	0.15%
Residue on ignition(sulfated)	Not more than 0.20%	0.07%
Assay	98.5 to100.5%	99.0%
pH	5.0 to 6.5	5.8