USD $10.00-100.00 / Kilogram
USD $10.00-100.00 / Kilogram
USD $10.00-100.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $10.00-100.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $8.20-8.80 / Kilogram
USD $8.20-8.80 / Kilogram
usp
lamivudine
appearance |
white or off- white crystalline powder |
|
identification |
ir,hplc conform |
|
light absorption |
≤0.0015% |
|
water |
≤0.20% |
|
limit of lamivudine enantiomer |
≤0.30% |
|
residual solvent |
ethanol |
≤0.20% |
|
tea: |
≤0.10% |
|
dichloromethane |
≤0.06% |
|
toluene |
≤0.089% |
|
n,n-dimethylformamide |
≤0.088% |
|
n-hexane |
≤0.029% |
|
total residue solvents |
≤0.30% |
chromatographic purity by hplc |
rrt at about 0.4 impurity |
≤0.30% |
|
rrt at about 0.9 impurity |
≤0.20% |
|
salicylic acid |
≤0.10% |
|
any individual impurity |
≤0.10% |
|
total impurity |
≤0.60% |
assay(hplc) |
98.0%~102.0%(anhydrous and solvent-free) |