USD $5.00-10.00 / Gram
USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
1.132907-72-3
2.ramosetron hydrochloride
3.good quality
4.stock available
5.competitive price
test | standard | results |
appearance | white crystalline power | conform |
specific rotation | the product of 1% methanol solution should be -41.0~-45.0 | -43.1° |
identification | infrared absorption: aqueous solution of this product 10ug / ml, the maximum absorption at wavelength 248nm ~ 312nm. | conform |
this product by drying at 105 °c for 2 hours of infrared absorption spectrum (kbr disk method) should be consistent with the standard atlas of infrared absorption | conform | |
color and clarity | the color of the 2% water solution may not be concentrated on yellow no. 4 standard color solution | conform |
ph | 4.0-5.0 | 4.5 |
related substances | single impurities nmt 0.5% | 0.01% |
total impurities nmt 0.5% | 0.02% | |
residue solvents | ethyl acetate nmt 0.2% | 0.03% |
alcohol nmt 0.5% | 0.02% | |
ethyl acetate nmt 0.06% | 0.01% | |
microbial limits | total aerobic microbial nmt 1000/g | 400/g |
5s isomers | nmt 0.4% | 0.05% |
water | nmt 3.0% | confirms |
heavy metals | nmt 0.001% | less 0.001% |
assay | 98.5%~102.0% | 99.90% |