1623791-69-4 Usage
Description
Carboxy-PEG4-phosphonic acid is a PEG linker with a carboxylic acid and phosphonic acid ends groups. The carboxylic acid can react with primary amines in the presence of activators such as EDC and HATU to form stable amide bonds. The hydrophilic PEG chain increases the water solubility of the compound in aqueous media.
Check Digit Verification of cas no
The CAS Registry Mumber 1623791-69-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,3,7,9 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1623791-69:
(9*1)+(8*6)+(7*2)+(6*3)+(5*7)+(4*9)+(3*1)+(2*6)+(1*9)=184
184 % 10 = 4
So 1623791-69-4 is a valid CAS Registry Number.