USD $100.00-100.00 / Kilogram
USD $10.00-90.00 / Kilogram
USD $8.80-8.80 / Gram
USD $10.00-90.00 / Kilogram
USD $2.00-2.00 / Gram
USD $1.00-10.00 / Kilogram
USD $2.00-2.00 / Gram
USD $2.00-2.00 / Gram
good quality acyclovir cas: 59277-89-3 --- gmp/dmf/cos documents
1kg/al-foil bag,5kg/al-foil bag,25kg/drum
shipped in 3 days after received the payment
white to crystialline powder, used as pharma raw material
analysis items |
standard |
|
characters |
a white crystalline powder |
|
identification
infrared absorption
liquid chromatogram |
the infrared absorption spectrum of a potassium bromide dispersion of it exhibits maxima only at the same wavelengths as that of a similar preparation of usp acyclovir rs |
|
the retention time of the major peak in the chromatogram of the assay preparation corresponds to that of the standard preparation as obtained under assay and limit for guanine |
||
organic volatile impurities |
meets the requirements |
|
ordinary impurities |
examine by thin-lager chromatography ≤1% |
|
limit for guanine |
≤0.7% |
|
loss on drying |
≤6.0% |
|
assay |
98.0% ~ 101.0% |
|
residual solvent |
toluene methanol ethanol acetic anhydride dimethyl sulfoxide |
≤890ppm ≤3000ppm ≤5000ppm ≤5000ppm ≤5000ppm |