FOB Price
أحصل على آخر سعر( Negotiable )
|Minimum Order
Place of Origin:
China
Price for Minimum Order:
-
Minimum Order Quantity:
25 Kilogram
Packaging Detail:
25kg/drum
Delivery Time:
7 days
Supplying Ability:
15 Ton per Month
Payment Type:
Other, PayPal, Money Gram, Western Union, D/P, D/A, L/C, T/T
الشخص الذي يمكن الاتصال به Ms. Evelyn
Rm 2405, Unit 1, Buiding 1, Taiyin Tower jianghan Econmic Development Zone, Wuhan, Hubei
| item | limit |
| specific rotation [a]d*0o | **7.6 to **9. degree |
| state of solution | *5.0% min. |
| chloride (cl) | 0.**0% max |
| sulfate (so4) | 0.**0% max |
| iron (fe) | *0ppm max |
| heavy metals (pb) | *5ppm max |
| arsenic (as2o3) | 1.5ppm max |
| loss on drying | 0.2%max |
| residue in ignition | 0.*0% max |
| assay | *8.5% to **1.5% |
| ph | 5.0 to 6.5 |
Main Functions and Use
D-Threonine is one kind of important organic chiral source, mainly applies in the chiral medicine, chiral chemical additive, chiral auxiliary and so on domains; In the pharmacy, it is used as the chiral source for the chiral synthesis. As one optically active organic acid, it has the nonreplaceable function in certain chiral compound's asymmetric synthesis process. At present, it is mainly used as the threonine protecting agent in the new broad spectrum antibiotic, D- propyl amine alcohol and polypeptide synthetic process.
