L-Tyrosine Disodium Salt -- CAS No: 122666-87-9
| CAS Registry Number |
122666-87-9 |
| Name |
L-Tyrosine Disodium Salt, Dihydrate |
| Synonyms |
L-3-(4-Hydroxyphenyl)alanine disodium salt hydrate |
| Molecular Formula |
C9H9NO3Na2• 2H2O |
| Molecular Weight |
261.19 |
| Molecular Structure |
 |
| Test |
T7123, Ultra Pure |
T7125, Ultra Biopure |
| Appearance |
Tan to light brown powder |
Tan to light brown powder |
| Assay (by titration, on dried basis) |
≥ 98.0% |
≥ 98.0% |
| Solubility (1% solution in H2O) |
Clear, complete and colorless |
Clear, complete and colorless |
| Identification (by IR) |
Conforms to structure |
Conforms to structure |
| Specific Rotation |
-12.6° to -14.4° |
-12.6° to -14.4° |
| Loss on Drying (110°C for 3 hours) |
≤ 16.0% |
≤ 16.0% |
| pH (1% solution in water) |
10.5 – 11.5 |
10.5 – 11.5 |
| pKa (@ 25ºC) |
-- |
-- |
| Heavy Metals (Lead) |
≤0.0015% |
≤0.0015% |
| Biological Impurity Testing |
| Test |
T7123, Ultra BioPure |
T7125, Ultra Biopure |
| Endotoxin (0.1% solution in H2O) |
-- |
≤ 0.01 EU/mL |
| Bioburden |
-- |
NMT 100 CFU/g |
| RNase, DNase, Nickase, Protease |
-- |
-- |
| Cell culture test |
-- |
-- |
| Specification Sheet |
| Specification Sheet |
 |
|
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