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Special Design for Camptothecin II - Ubenimex Bestatin CAS 58970-76-6 Purity ≥99.0% (HPLC) API High Purity – Ruifu Featured Image
  • Special Design for Camptothecin II - Ubenimex Bestatin CAS 58970-76-6 Purity ≥99.0% (HPLC) API High Purity – Ruifu

Special Design for Camptothecin II - Ubenimex Bestatin CAS 58970-76-6 Purity ≥99.0% (HPLC) API High Purity – Ruifu

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Special Design for Camptothecin II - Ubenimex Bestatin CAS 58970-76-6 Purity ≥99.0% (HPLC) API High Purity – Ruifu Detail:

Manufacturer with High Purity and Stable Quality
Chemical Name: Ubenimex
Synonyms: Bestatin
CAS: 58970-76-6
Ubenimex: A Potent Aminopeptidase Inhibitor
API High Quality, Commercial Production

Chemical Name Ubenimex
Synonyms Bestatin; N-[(2S,3R)-3-Amino-2-hydroxy-4-phenylbutyryl]-L-leucine
CAS Number 58970-76-6
CAT Number RF-API31
Stock Status In Stock, Production Scale Up to Hundreds of Kilograms
Molecular Formula C16H24N2O4
Molecular Weight 308.37
Brand Ruifu Chemical
Item Specifications
Appearance White to Off-White Powder
Infrared Detection According with CP2010 Standard
Identification Reactioon with CuSO4 in NaOH Solution, Reaction with 20% Acetic Acid, Ninhydrin and NaOH Solution
Melting Point ~225.0℃ (dec)
Specific Rotation [α]20D -15.5° ~ -18.0° (C=1 in 1N HCL)
Related Substance (TCL) One Spot
Purity (HPLC) ≥99.0%
Related Substances ≤1.0%
PH 4.5~7.0
Loss on Drying ≤0.50%
Residue on Ignition ≤0.10%
Heavy Metals ≤20ppm
Assay ≥99.0% (T) 
Test Standard Chinese Pharmacopoeia (CP)
Usage Active Pharmaceutical Ingredient (API)

Package: Bottle, Aluminum foil bag, Cardboard drum, 25kg/Drum, or according to customer’s requirement.

Storage Condition: Store in sealed containers at cool and dry place; Protect from light, moisture and pest infestation.

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Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer and supplier of Ubenimex (CAS: 58970-76-6) with high quality. Ubenimex (Bestatin) is a potent aminopeptidase inhibitor.
Ubenimex, also known as Bestatin, a dipeptide N-[(2S,3R)-3-Amino-2-hydroxy-4-phenylbutyryl]-L-leucine is a competitive for leucine aminopeptidase and aminopeptidase-B protease inhibitor. It exerts a direct stimulating effect on lymphocytes (and monocytes) via its fixation on cell surface leucine-aminopeptidase, and an indirect effect on monocytes (and lymphocytes) via aminopeptidase B inhibition of tuftsin catabolism. Thus, it is an immunomodulating agent. Ubenimex has also been studied for use in the treatment of acute myelocytic leukemia. It is also an inhibitor of leukotriene A4 hydrolase and aminopeptidase N. Ubenimex has multiple physiological functions including the ability to act as an immunomodifier and enhance the proliferation of human bone marrow granulocyte-macrophage progenitor cells to form CFU-GM colonies. Research indicates that bestatin can indirectly act on monocytes by inhibiting Aminopeptidase B, which in turn inhibits the catabolism of tuftsin. Bestatin has also been shown to inhibit Leukotriene A4 hydrolase (LTA4H). This compound has been demonstrated to bind to cell surfaces and research indicates that it can directly stimulate lymphocytes through its fixation on the cell surface. The agent has been used in multiple leukemia studies. Ubenimex is an immunostimulant useful in the treatment of non-lymphocytic leukemia. In other types of cancers ubenimex added to radiotherapy or chemotherapy following surgery significantly inmases survival time through immunopotentiation.

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