Biotin-PEG8-NHS ester - ≥98% , CAS No.2143968-03-8

CAS: 2143968-03-8 Cat. No.: B595444 Molecular Weight: 764.90 PubChem CID: 77078238
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Storage
Protected from light,Store at -20°C,Argon charged
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
25mg
B595444-25mg
2

$159.90

$189.90
Save $30.00 (15.80%)
100mg
B595444-100mg
1
$519.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Protected from light,Store at -20°C,Argon charged Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Biotin-PEG8-NHS ester is PEG derivative containing a biotin group and an NHS ester group. The hydrophilic PEG spacer increases solubility in aqueous media. The NHS group reacts specifically and efficiently with lysine and N-terminal amino groups at pH 7-9 to form stable amide bonds.

Specifications

Specifications & Purity
≥98%
Storage
Protected from light, Store at -20°C, Argon charged
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥98%
Names and Identifiers
Canonical SmilesC1CC(=O)N(C1=O)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)CCCCC2C3C(CS2)NC(=O)N3
IUPAC Name(2,5-dioxopyrrolidin-1-yl) 3-[2-[2-[2-[2-[2-[2-[2-[2-[5-[(3aS,4S,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoate
InChIKeyYCGZDGOCJORRHA-IUEKTVKYSA-N
INCHI1S/C33H56N4O14S/c38-28(4-2-1-3-27-32-26(25-52-27)35-33(42)36-32)34-8-10-44-12-14-46-16-18-48-20-22-50-24-23-49-21-19-47-17-15-45-13-11-43-9-7-31(41)51-37-29(39)5-6-30(37)40/h26-27,32H,1-25H2,(H,34,38)(H2,35,36,42)/t26-,27-,32-/m0/s1
Isomeric SMILES C1CC(=O)N(C1=O)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)CCCC[C@H]2[C@@H]3[C@H](CS2)NC(=O)N3
PubChem CID 77078238
Molecular Weight 764.90

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassBiotin and derivatives
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentBiotin and derivatives
Alternative Parents Thienoimidazolidines  Imidazolidinones  N-acyl amines  Pyrrolidine-2-ones  Dicarboximides  Thiophenes  Thiolanes  Lactams  Ureas  Secondary carboxylic acid amides  Monocarboxylic acids and derivatives  Azacyclic compounds  Dialkylthioethers  Dialkyl ethers  Organic oxides  Carbonyl compounds  Hydrocarbon derivatives  Organonitrogen compounds  
Molecular FrameworkAliphatic heteropolycyclic compounds
Substituents Biotin_derivative - Thienoimidazolidine - Fatty amide - Imidazolidinone - N-acyl-amine - Pyrrolidone - Fatty acyl - 2-pyrrolidone - Dicarboximide - Imidazolidine - Pyrrolidine - Thiolane - Thiophene - Carboxamide group - Urea - Lactam - Secondary carboxylic acid amide - Dialkylthioether - Azacycle - Carboxylic acid derivative - Thioether - Monocarboxylic acid or derivatives - Dialkyl ether - Ether - Carbonyl group - Organic oxygen compound - Organic nitrogen compound - Organic oxide - Hydrocarbon derivative - Organonitrogen compound - Organooxygen compound - Aliphatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as biotin and derivatives. These are organic compounds containing a ureido (tetrahydroimidizalone) ring fused with a tetrahydrothiophene ring.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

2 results found

Lot NumberCertificate TypeDateItem
G2417713Certificate of AnalysisApr 18, 2024 B595444
G2417714Certificate of AnalysisApr 18, 2024 B595444
Chemical and Physical Properties
SensitivityMoisture sensitive;Light sensitive
Refractive Indexn20D1.55 (Predicted)
Molecular Weight764.900 g/mol
XLogP3-2.200
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count15
Rotatable Bond Count34
Exact Mass764.351 Da
Monoisotopic Mass764.351 Da
Topological Polar Surface Area233.000 Ų
Heavy Atom Count52
Formal Charge0
Complexity1040.000
Isotope Atom Count0
Defined Atom Stereocenter Count3
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Solution Calculators
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