1807539-06-5 Usage
Description
Acid-PEG3-t-butyl ester is a PEG linker containing a t-butyl protected carboxyl group with a terminal carboxylic acid. 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. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions.
Check Digit Verification of cas no
The CAS Registry Mumber 1807539-06-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,8,0,7,5,3 and 9 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1807539-06:
(9*1)+(8*8)+(7*0)+(6*7)+(5*5)+(4*3)+(3*9)+(2*0)+(1*6)=185
185 % 10 = 5
So 1807539-06-5 is a valid CAS Registry Number.