1381861-91-1 Usage
Description
Bromo-PEG2-t-butyl ester is a PEG linker containing a bromide group and a t-butyl protected carboxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The bromide (Br) is a very good leaving group for nucleophilic substitution reactions. The t-butyl protected carboxyl group can be deprotected under acidic conditions.
Check Digit Verification of cas no
The CAS Registry Mumber 1381861-91-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,1,8,6 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1381861-91:
(9*1)+(8*3)+(7*8)+(6*1)+(5*8)+(4*6)+(3*1)+(2*9)+(1*1)=181
181 % 10 = 1
So 1381861-91-1 is a valid CAS Registry Number.