Product No.: AS640CAS: 5794-13-8In Stock
L-门冬酰胺一水合物 L-Asparagine Monohydrate（L-天冬酰胺一水合物 ）
L-门冬酰胺一水合物 L-Asparagine Monohydrate. High purity pharma grade, widely used in the preparation of mammalian cell culture media, supporting efficient and stable cell growth. This product undergoes strict bacterial endotoxin and microbial limit controls, suitable for biologics and injectable-grade R&D with stringent pyrogen requirements.
Select Spec* COA batch numbers are updated in real-time
Select Spec
* COA batch numbers are updated in real-time5kg/Drum
$394.00
Stock: 100 unit
25kg/Drum
$1,871.50
Stock: 100 unit
Quantity
Remaining 100 unit
Selected Configuration1kg/Bag × 1
Total$109.00
Application Scenarios
CHO Cell CultureVaccine ProductionMonoclonal Antibody R&D
Quality Specifications
性状 Description
本品为白色或类白色结晶或结晶性粉末；无臭。本品在热水中易溶，在甲醇、乙醇或乙醚中几乎不溶；在稀盐酸或氢氧化钠试液中易溶。This product is white or white crystal or crystalline powder; Odorless. It is easily soluble in hot water and almost insoluble in methanol, ethanol or ether. Soluble in dilute hydrochloric acid or sodium hydroxide test solution.
鉴别 Identification
（1）取本品约1g，加10%氢氧化钠溶液5ml，微热至沸，产生的蒸汽有氨臭并能使湿润的红色石蕊试纸变蓝色。Take about 1g of this product, add 5ml of 10% sodium hydroxide solution, heat slightly to boiling, the generated steam has ammonia odor, and can turn the wet red litmus test paper blue. 一致 Identical （2）取本品约1mg，加水5ml溶解后，加茚三酮5mg，加热，溶液显紫色。Take about 1mg of this product, dissolve it with 5ml of water, add 5mg of ninhydrin, and heat the solution to show purple. 一致 Identical
比旋度 Specific optical rotation[α]D20
+31° ～ +35°
透光率 Transmittance
≥98.0%
氯化物 Chloride
≤0.005%
硫酸盐 Sulfate
≤0.005%
铁盐 Iron
≤0.001%
铵盐 Ammonium
≤0.1%
重金属 Heavy metals
≤0.001%
砷盐 Arsenic
≤0.0001%
干燥失重 Loss on Drying
11.5% ～12.5%
炽灼残渣 Residue on ignition
≤0.1%
相关物质 related substances
天冬氨酸 Aspartic acid Cystine ≤0.5% 总杂 Sum of Impurities ≤0.8%
含量 Assay
98.0% ～101.0%
微生物限度 Microbiological examination
需氧菌总数 Total aerobic microbial count ≤50cfu/g 霉菌和酵母菌总数 Total yeasts and moulds count ≤10cfu/g
细菌内毒素 Endotoxin
＜6 EU/g