1446282-18-3 Usage
Description
Amino-PEG5-t-butyl ester is a PEG molecule consisting of an amino group and a t-butyl protected carboxyl group. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The t-butyl protected carboxyl group can be deprotected under acidic conditions.The hydrophilic PEG spacer increases solubility in aqueous media.
Uses
This heterobifunctional, PEGylated crosslinker features an amino group at one end and t-butyl-protected carboxyl group at the other, which can be deprotected with acidic conditions. The hydrophillic PEG linker facilitates solubility in biological applications. Amino-PEG5-t-butyl ester can be used for bioconjugation or as a building block for synthesis of small molecules, conjugates of small molecules and/or biomolecules, or other tool compounds for chemical biology and medicinal chemistry that require ligation. Examples of applications include its synthetic incorporation into antibody-drug conjugates or proteolysis-targeting chimeras (PROTAC? molecules) for targeted protein degradation.
Check Digit Verification of cas no
The CAS Registry Mumber 1446282-18-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,4,6,2,8 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1446282-18:
(9*1)+(8*4)+(7*4)+(6*6)+(5*2)+(4*8)+(3*2)+(2*1)+(1*8)=163
163 % 10 = 3
So 1446282-18-3 is a valid CAS Registry Number.
1446282-18-3Relevant articles and documents
Preparation method of amino polyethylene glycol propionic acid
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Paragraph 0095; 0100, (2019/01/14)
The invention relates to the field of organic synthesis, in particular to a preparation method of amino polyethylene glycol propionic acid. The preparation method comprises the steps that catalytic hydrogenation is carried out on dibenzyl amino polyethylene glycol tert-butyl propionate shown in formula I-2 to obtain amino polyethylene glycol tert-butyl propionate shown in formula I-3; (2) the amino polyethylene glycol tert-butyl propionate shown in formula I-3 is hydrolyzed under the acidic condition to obtain amino polyethylene glycol propionic acid shown in formula I. The preparation methodof the amino polyethylene glycol propionic acid has the advantages that the defects in the prior art that the yield is low, the dangerousness is high, and the enlargement of production is difficult are overcome, the reaction conditions are mild, the operation is simple, an intermediate does not to be purified, the next reaction can be directly carried out, the whole yield reaches up to 87-92%, thepurity of end products reaches up to 97-99.5%, and a safe and efficient synthetic route is provided for the preparation of amino polyethylene glycol propionic acid.
