L-Tyrosine 60-18-4 L-Tyrosine CAS:60-18-4
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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) |
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