MedKoo Cat#: 572010 | Name: Biotin-PEG3-Mal
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Description:

WARNING: This product is for research use only, not for human or veterinary use.

Biotin-PEG3-Mal is a PEG derivative containing a biotin group and a maleimide group for labeling and crosslinking cysteines and other sulfhydryls. The maleimide group reacts specifically with sulfhydryl groups (at pH 6.5-7.5) to form a stable, irreversible thioether linkage. The hydrophilic PEG spacer increases solubility in aqueous media and increases membrane impermeability of the molecules conjugated to the biotin compound. It also helps to minimize steric hindrance involved with the binding to avidin molecules.

Chemical Structure

Biotin-PEG3-Mal
Biotin-PEG3-Mal
CAS#1431618-70-0

Theoretical Analysis

MedKoo Cat#: 572010

Name: Biotin-PEG3-Mal

CAS#: 1431618-70-0

Chemical Formula: C25H39N5O8S

Exact Mass: 569.2519

Molecular Weight: 569.67

Elemental Analysis: C, 52.71; H, 6.90; N, 12.29; O, 22.47; S, 5.63

Price and Availability

Size Price Availability Quantity
100mg USD 550.00 2 Weeks
250mg USD 950.00 2 Weeks
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Related CAS #
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Synonym
Biotin-PEG3-Mal
IUPAC/Chemical Name
N-(15-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-13-oxo-3,6,9-trioxa-12-azapentadecyl)-5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide
InChi Key
OSIQQRWDJZNBFW-JXQFQVJHSA-N
InChi Code
InChI=1S/C25H39N5O8S/c31-20(4-2-1-3-19-24-18(17-39-19)28-25(35)29-24)26-8-11-36-13-15-38-16-14-37-12-9-27-21(32)7-10-30-22(33)5-6-23(30)34/h5-6,18-19,24H,1-4,7-17H2,(H,26,31)(H,27,32)(H2,28,29,35)/t18-,19-,24-/m0/s1
SMILES Code
O=C1N[C@@]2([H])CS[C@@H](CCCCC(NCCOCCOCCOCCNC(CCN3C(C=CC3=O)=O)=O)=O)[C@@]2([H])N1
Appearance
Solid powder
Purity
>98% (or refer to the Certificate of Analysis)
Shipping Condition
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
Storage Condition
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
Solubility
Soluble in DMSO
Shelf Life
>3 years if stored properly
Drug Formulation
This drug may be formulated in DMSO
Stock Solution Storage
0 - 4 C for short term (days to weeks), or -20 C for long term (months).
HS Tariff Code
2934.99.03.00
More Info
PEG Linkers may be useful in the development of antibody drug conjugates.

Preparing Stock Solutions

The following data is based on the product molecular weight 569.67 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
1: Deng CY, Long YY, Liu S, Chen ZB, Li C. [Construction of biotin-modified polymeric micelles for pancreatic cancer targeted photodynamic therapy]. Yao Xue Xue Bao. 2015 Aug;50(8):1038-44. Chinese. PubMed PMID: 26669006. 2: Zhu W, Song Z, Wei P, Meng N, Teng F, Yang F, Liu N, Feng R. Y-shaped biotin-conjugated poly (ethylene glycol)-poly (epsilon-caprolactone) copolymer for the targeted delivery of curcumin. J Colloid Interface Sci. 2015 Apr 1;443:1-7. doi: 10.1016/j.jcis.2014.11.073. Epub 2014 Dec 6. PubMed PMID: 25526295. 3: Ke S, Wright JC, Kwon GS. Avidin-biotin-PEG-CPA complexes as potential EPR-directed therapeutic protein carriers: preparation and characterization. Bioconjug Chem. 2007 Sep-Oct;18(5):1644-50. Epub 2007 Aug 18. PubMed PMID: 17705554. 4: Kaiser K, Marek M, Haselgrübler T, Schindler H, Gruber HJ. Basic studies on heterobifunctional biotin-PEG conjugates with a 3-(4-pyridyldithio)propionyl marker on the second terminus. Bioconjug Chem. 1997 Jul-Aug;8(4):545-51. PubMed PMID: 9258454.