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Testing services

Working on CDMO for Macromolecular Target Drugs

Structure characteristics and physicochemical study

We adopt advanced analysis approaches, and carry out the all-round analysis for products in terms of physics and chemistry. Whether it is used to characterize the reference product in different stages, evaluate products of different batches, or it is used to the comparison study of biosimilar or biosuperiors, it will meet the requirement of scientific standard and international regulations.

◆ Peptide level: amino acid sequences, composition, modification analysis, N/C terminal sequence analysis, analysis of N-glycosylation/O-glycosylation site, disulfide bond; 

◆ Protein level: intact molecular weight, desaccharide molecular weight;

◆ Subunit level: reduced molecular weight, desaccharide reducing molecular weight; 

◆ High order structure: Ultraviolet spectrum, fluorescence spectrum, Raman spectrum, thermal stability, circular dichroism;

◆ Physicochemical study: protein content (extinction coefficient research), amino acid composition analysis, glycosylated protein, sialic acid content, glycoform type (N glucoside/O glucoside), content of free sulfhydryl group, size heterogeneity, and charge heterogeneity.