USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $6.00-9.00 / Gram
USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
items |
specification |
analysis result |
|
appearance |
white, odorless crystalline powder |
conform |
|
identification |
the retention time of the principal peak in the chromatogram obtained with the test solution corresponds to that of the principal peak in the chromatogram obtained with reference solution. |
conform |
|
color of solution |
not more intensely colored than reference solution y2 or gy2 |
conform |
|
clarity of solution |
not more pronounced than that of reference suspension i |
conform |
|
specific rotation |
-26°~ -32° |
-28° |
|
ph |
2.2~2.8 |
2.4 |
|
related impurities |
single impurities |
not more than1.5% |
0.4% |
total impurities |
not more than3.0% |
1.2% |
|
water content |
not more than 2.0% |
0.4% |
|
residue on solvents |
not more than 2.0% |
0.8% |
|
residue of ignition |
not more than 0.1% |
conform |
|
heavy metals |
not more than 30ppm |
conform |
|
bacterial endotoxins |
not more than 0.17eu/mg |
conform |
|
sterility test |
no growth of micro-organism occurs after 14 days of incubation. |
conform |
|
particulate matter |
≥10µm, no more than 4000/g |
768 |
|
≥25µm, no more than 400/g |
14 |
||
assay |
contain c13h17n5o8s2 92.0% ~105.0% (calculated on anhydrous substance ) |
99.0% |