518044-42-3 Usage
Description
Mal-PEG6-acid is a PEG linker containing a maleimide group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond.
Check Digit Verification of cas no
The CAS Registry Mumber 518044-42-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,8,0,4 and 4 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 518044-42:
(8*5)+(7*1)+(6*8)+(5*0)+(4*4)+(3*4)+(2*4)+(1*2)=133
133 % 10 = 3
So 518044-42-3 is a valid CAS Registry Number.