USD $5.00-10.00 / Gram
USD $1.00-10.00 / Kilogram
USD $5.00-10.00 / Gram
USD $75.00-150.00 / Kilogram
USD $4.50-5.00 / Liter
USD $8.20-8.80 / Kilogram
USD $11,000.00-12,000.00 / Metric Ton
USD $11,000.00-12,000.00 / Metric Ton
USD $11,000.00-12,000.00 / Metric Ton
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name: | l-tyrosine |
name: | 3-(4-hydroxyphenyl)-l-alanine;2-amino-3-(4-hydroxyphenyl)-propanoic acid;2-amino-3-(p-hydroxyphenyl)propionic acid;4-hydroxyphenylalanine;fema 3736;h-l-tyr-oh;h-tyr-oh;l-3-[4-hydroxyphenyl]alanine |
casno: | 60-18-4 |
: | c9h11no3 |
: | 181.19 |
einecs: | 200-460-4 |
: | food and feed additive;;tyrosine [tyr, y];amino acids;amino acids and derivatives;alpha-amino acids;biochemistry;nutritional supplements;l-amino acids;amino acids; |
mol: | 60-18-4.mol |
>300 °c (dec.)(lit.) | |
-11.65 º (c=5,dil hcl/h2o 50/50) | |
1.34 | |
-12 ° (c=5, 1mol/l hcl) | |
fema | 3736 |
176 °c | |
store at rt. | |
1 m hcl: 25 mg/ml | |
form | powder |
0.45 g/l (25 ºc) |
item |
limit |
result |
description |
white crystals or crystalline powder |
conforms |
specific rotation[a]d25° |
-9.8°~-11.2° |
-10.9° |
identification |
infrared absorption |
conforms |
chloride(cl) |
≤0.040% |
0.017% |
sulfate(so4) |
≤0.040% |
0.017% |
iron(fe) |
≤30ppm |
5ppm |
heavy metals(pb) |
≤15ppm |
5ppm |
organic volatile impurities |
meet the requirements |
conforms |
loss on drying |
≤0.30% |
0.16% |
residue on ignition |
≤0.40% |
0.07% |
ph |
4.0~7.0 |
5.8 |
assay |
98.5-101.5% |
99.8% |
conclusion |
qualified (usp32) |