o-Arsanilic acid - ≥98% , CAS No.2045-00-3

CAS: 2045-00-3 Cat. No.: A100461 Molecular Weight: 217.05 Beilstein Registry Number: 16(1)463 EC Number: 218-064-5
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
(O-AMINOPHENYL)ARSONIC ACID | 2-Arsanilic acid | EN300-19720 | UNII-4P7T2PH7DL | Q27260326 | SCHEMBL3264637 | 2-Aminophenylarsonic acid | AKOS009031463 | NSC12611 | NSC-12611 | 2-Aminobenzinearsonic acid | o-Arsanilic acid | J-013333 | o-Arsanilic acid, 9
Storage
Protected from light,Store at -20°C,Argon charged
Shipped In
Ice chest + Ice pads,FedEx DG Service
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5g
A100461-5g
1
$39.90
Enter a quantity for the sizes you want to add.
🧪

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,FedEx DG Service 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 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

product describtion:

o-Arsanilic Acid is an organoarsenic compound. o-Arsanilic Acid is a highly toxic contaminant and can be found in plants growing in contaminated soil.

Specifications

Synonyms
(O-AMINOPHENYL)ARSONIC ACID | 2-Arsanilic acid | EN300-19720 | UNII-4P7T2PH7DL | Q27260326 | SCHEMBL3264637 | 2-Aminophenylarsonic acid | AKOS009031463 | NSC12611 | NSC-12611 | 2-Aminobenzinearsonic acid | o-Arsanilic acid | J-013333 | o-Arsanilic acid, 9
Specifications & Purity
≥98%
Storage
Protected from light, Store at -20°C, Argon charged
Shipped In
Ice chest + Ice pads, FedEx DG Service
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥98%
Names and Identifiers
Canonical SmilesC1=CC=C(C(=C1)N)[As](=O)(O)O
IUPAC Name(2-aminophenyl)arsonic acid
InChIKeyLQCOCUQCZYAYQK-UHFFFAOYSA-N
INCHI1S/C6H8AsNO3/c8-6-4-2-1-3-5(6)7(9,10)11/h1-4H,8H2,(H2,9,10,11)
Isomeric SMILES C1=CC=C(C(=C1)N)[As](=O)(O)O
WGK Germany 3
UN Number 3465
Packing Group III
Molecular Weight 217.05
Beilstein 16(1)463
Reaxy-Rn 2937145
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=2937145&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
SubclassAniline and substituted anilines
Intermediate Tree Nodes Not available
Direct ParentAniline and substituted anilines
Alternative Parents Pentaorganoarsanes  Oxygen-containing organoarsenic compounds  Organic metalloid salts  Primary amines  Organopnictogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic homomonocyclic compounds
Substituents Aniline or substituted anilines - Pentaorganoarsane - Oxygen-containing organoarsenic compound - Organic metalloid salt - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organic salt - Primary amine - Organonitrogen compound - Organoarsenic compound - Amine - Aromatic homomonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as aniline and substituted anilines. These are organic compounds containing an aminobenzene moiety.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Mechanisms of Action
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.

3 results found

Lot NumberCertificate TypeDateItem
I2511232Certificate of AnalysisJul 14, 2025 A100461
G2429174Certificate of AnalysisJul 18, 2024 A100461
G2429175Certificate of AnalysisJul 18, 2024 A100461
Chemical and Physical Properties
SolubilityEasily soluble in water, ethanol, and acid, soluble in methanol, glacial acetic acid, and soluble in ether.
SensitivityLight sensitive.Moisture sensitive
Melt Point(°C)153°C
Molecular Weight217.050 g/mol
XLogP3
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count4
Rotatable Bond Count1
Exact Mass216.972 Da
Monoisotopic Mass216.972 Da
Topological Polar Surface Area83.600 Ų
Heavy Atom Count11
Formal Charge0
Complexity179.000
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
Citations of This Product
References
1. Gao Xiao, Jun Zhang, Mingzhu Zheng, Liyin Chen, Samson Afewerki, Manna Dai, Junling Guo.  (2025)  High-throughput continuous microfluidic magnifiable manufactured microstructured MOFs-mediated micropollutants mitigation (M7).  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2025.131931]
Solution Calculators
Reviews

Customer Reviews

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.