1670249-37-2 Usage
Description
Azido-PEG9-acid is a PEG molecule consisting of an azide and a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU).
Check Digit Verification of cas no
The CAS Registry Mumber 1670249-37-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,7,0,2,4 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1670249-37:
(9*1)+(8*6)+(7*7)+(6*0)+(5*2)+(4*4)+(3*9)+(2*3)+(1*7)=172
172 % 10 = 2
So 1670249-37-2 is a valid CAS Registry Number.