HO-PEG16-OH, also known as polyethylene glycol (PEG) with a molecular weight of 1000, is a hydrophilic, non-toxic, and biocompatible polymer. It consists of a linear chain of 16 repeating ethylene oxide units, with hydroxyl groups at both ends. This chemical is widely used in pharmaceuticals, cosmetics, and biotechnology applications due to its ability to improve solubility, stability, and bioavailability of various compounds. HO-PEG16-OH is also employed as a spacer or linker in the synthesis of conjugates, such as drug-protein or drug-antibody complexes, and plays a crucial role in enhancing the circulation time and reducing the immunogenicity of therapeutic agents.
The CAS Registry Mumber 4669-05-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,6 and 9 respectively; the second part has 2 digits, 0 and 5 respectively. Calculate Digit Verification of CAS Registry Number 4669-05: (6*4)+(5*6)+(4*6)+(3*9)+(2*0)+(1*5)=110 110 % 10 = 0 So 4669-05-0 is a valid CAS Registry Number.