Product No.: CY522CAS: 56-89-3In Stock
L-胱氨酸 L-Cystine
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
$544.00
Stock: 100 unit
25kg/Drum
$2,584.00
Stock: 100 unit
Quantity
Remaining 98 unit
Selected Configuration1kg/Bag × 1
Total$139.00
Application Scenarios
CHO Cell CultureVaccine ProductionMonoclonal Antibody R&D
Quality Specifications
外观 Appearance
白色或近白色结晶粉末
鉴别 Identification
测试 A (conforms), 测试 B (conforms), 比旋光度 [α]D20 (EP) (-218° ~ -224°), 比旋光度 [α]D25 (USP) (-215° ~ -225°)
溶液外观 Appearance of solution
澄清且颜色不深于 Y7 参比溶液
茚三酮阳性物质 Ninhydrin-positive substances
≤ 0.2%
氯化物 Chloride
≤ 200ppm
硫酸盐 Sulfates
≤ 200ppm
铵盐 Ammonium
≤ 200ppm
铁 Iron
≤ 10ppm
重金属 Heavy metals
≤ 10ppm
干燥失重 Loss on Drying (EP)
≤ 0.2%
干燥失重 Loss on Drying (USP)
≤ 0.2%
硫酸灰分 Sulfated ash
≤ 0.1%
含量 Assay
98.5 ~ 101.0 % (on dried basis)
微生物检查 Total aerobic microbial count
≤100 CFU/g
内毒素 Endotoxin
< 0.02EU/mg