4-Azido-2,3,5,6-tetrafluorobenzoic Acid N-Succinimidyl Ester - ≥97% , CAS No.126695-58-7

CAS: 126695-58-7 Cat. No.: A131078 Molecular Weight: 332.167 EC Number: 808-188-3
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
1-[(4-Azido-2,3,5,6-tetrafluorobenzoyl)oxy]pyrrolidine-2,5-dione | N-Succinimidyl 4-Azido-2,3,5,6-tetrafluorobenzoate;4-azido-2,3,5,6-tetrafluorobenzoic acid 2,5-dioxo-pyrrolidin-1-yl ester | 4-Azido-2,3,5,6-tetrafluorobenzoic Acid N-Succinimidyl ester |
Storage
Store at -20°C,Argon charged
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
50mg
A131078-50mg
1
$56.90
200mg
A131078-200mg
1
$173.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥97% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

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

Product Describtion:

4-N3Pfp-NHS ester is a noncleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). 

Specifications

Synonyms
1-[(4-Azido-2, 3, 5, 6-tetrafluorobenzoyl)oxy]pyrrolidine-2, 5-dione | N-Succinimidyl 4-Azido-2, 3, 5, 6-tetrafluorobenzoate;4-azido-2, 3, 5, 6-tetrafluorobenzoic acid 2, 5-dioxo-pyrrolidin-1-yl ester | 4-Azido-2, 3, 5, 6-tetrafluorobenzoic Acid N-Succinimidyl ester |
Specifications & Purity
≥97%
Storage
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
≥97%
Names and Identifiers
Canonical SmilesC1CC(=O)N(C1=O)OC(=O)C2=C(C(=C(C(=C2F)F)N=[N+]=[N-])F)F
IUPAC Name(2,5-dioxopyrrolidin-1-yl) 4-azido-2,3,5,6-tetrafluorobenzoate
InChIKeyHCTLWQSYGIBOFM-UHFFFAOYSA-N
INCHI1S/C11H4F4N4O4/c12-6-5(7(13)9(15)10(8(6)14)17-18-16)11(22)23-19-3(20)1-2-4(19)21/h1-2H2
Isomeric SMILES C1CC(=O)N(C1=O)OC(=O)C2=C(C(=C(C(=C2F)F)N=[N+]=[N-])F)F
Molecular Weight 332.167
Reaxy-Rn 3633642
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=3633642&ln=

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
SuperclassBenzenoids
ClassBenzene and substituted derivatives
SubclassBenzoic acids and derivatives
Intermediate Tree Nodes Halobenzoic acids and derivatives
Direct Parent3-halobenzoic acids and derivatives
Alternative Parents 2-halobenzoic acids and derivatives  Phenylazides  Benzoyl derivatives  Fluorobenzenes  Pyrrolidine-2-ones  Aryl fluorides  Vinylogous halides  Dicarboximides  Azo compounds  Azo imides  Lactams  Carboxylic acid salts  Azacyclic compounds  Monocarboxylic acids and derivatives  Carbonyl compounds  Hydrocarbon derivatives  Organic oxides  Organic salts  Organic zwitterions  Organofluorides  Organopnictogen compounds  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents 2-halobenzoic acid or derivatives - 3-halobenzoic acid or derivatives - Phenylazide - Benzoyl - Halobenzene - Fluorobenzene - Pyrrolidone - 2-pyrrolidone - Aryl fluoride - Aryl halide - Dicarboximide - Pyrrolidine - Vinylogous halide - Azo imide - Azo compound - Lactam - Carboxylic acid salt - Organoheterocyclic compound - Monocarboxylic acid or derivatives - Azacycle - Carboxylic acid derivative - Organic nitrogen compound - Organohalogen compound - Organofluoride - Organonitrogen compound - Organooxygen compound - Organic zwitterion - Organic salt - Carbonyl group - Hydrocarbon derivative - Organic oxide - Organopnictogen compound - Organic oxygen compound - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as 3-halobenzoic acids and derivatives. These are benzoic acids or derivatives carrying a halogen atom at the 3-position of the benzene 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.

8 results found

Lot NumberCertificate TypeDateItem
L2201441Certificate of AnalysisJun 09, 2026 A131078
H2323143Certificate of AnalysisJun 10, 2025 A131078
H2323144Certificate of AnalysisJun 10, 2025 A131078
H2302054Certificate of AnalysisMay 12, 2025 A131078
H2302055Certificate of AnalysisMay 12, 2025 A131078
H2302056Certificate of AnalysisMay 12, 2025 A131078
H2302058Certificate of AnalysisMay 12, 2025 A131078
L2201442Certificate of AnalysisOct 27, 2022 A131078
Chemical and Physical Properties
SensitivityLight Sensitive,Moisture Sensitive,Heat Sensitive
Melt Point(°C)113 °C
Molecular Weight332.170 g/mol
XLogP32.200
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count10
Rotatable Bond Count4
Exact Mass332.017 Da
Monoisotopic Mass332.017 Da
Topological Polar Surface Area78.000 Ų
Heavy Atom Count23
Formal Charge0
Complexity552.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
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
Reviews

Customer Reviews

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