... .5% ISO9001, HACCP, KOSHER, HALALName: High quality Tyrosine supplierSynonyms: 3-(4-Hydroxyphenyl)-L-alanine, L-Tyrosine, TyrCertifications: ISO9001, HACCP, KOSHER ... raw material of synthetic peptides hormones, antibiotics, dopamine drugs 3. Feed grade: Tyrosine is used for preparation of artificial ... 98.5~100.598.5~100.5Specific rotation-9.8°~11.3°-11.3°~12.1°Transmittance≥98.0≥95.0Heavy metal(Pb%)≤ ...