trans-Vaccenic acid - ≥97% , CAS No.693-72-1

CAS: 693-72-1 Cat. No.: T665791 Molecular Weight: 282.46 EC Number: 211-758-9
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
11-trans-Octadecenoic acid | trans-11-Octadecenoic acid
Storage
Store at -20°C,Argon charged
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
100mg
T665791-100mg
3

$209.90

$314.90
Save $105.00 (33.34%)
500mg
T665791-500mg
3

$787.90

$1,181.90
Save $394.00 (33.34%)
Enter a quantity for the sizes you want to add.
🧪

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 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

A naturally occurring trans fat.

Specifications

Synonyms
11-trans-Octadecenoic acid | trans-11-Octadecenoic acid
Specifications & Purity
≥97%
Biochemical and Physiological Mechanisms
Isomer of oleic acid. Down-regulates expression of Bcl-2 and procaspase-9 to inhibit proliferation. Anti-carcinogenic potential. Active in vitro and in vivo .
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.
Note
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Purity
≥97%
Names and Identifiers
Canonical SmilesCCCCCCC=CCCCCCCCCCC(=O)O
IUPAC Name(E)-octadec-11-enoic acid
InChIKeyUWHZIFQPPBDJPM-BQYQJAHWSA-N
INCHI1S/C18H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h7-8H,2-6,9-17H2,1H3,(H,19,20)/b8-7+
Isomeric SMILES CCCCCC/C=C/CCCCCCCCCC(=O)O
WGK Germany 1
Molecular Weight 282.46
Reaxy-Rn 1726564
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1726564&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
SuperclassLipids and lipid-like molecules
ClassFatty Acyls
SubclassFatty acids and conjugates
Intermediate Tree Nodes Not available
Direct ParentLong-chain fatty acids
Alternative Parents Unsaturated fatty acids  Straight chain fatty acids  Monocarboxylic acids and derivatives  Carboxylic acids  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents Long-chain fatty acid - Unsaturated fatty acid - Straight chain fatty acid - Monocarboxylic acid or derivatives - Carboxylic acid - Carboxylic acid derivative - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Carbonyl group - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as long-chain fatty acids. These are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms.
External Descriptors Unsaturated fatty acids
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
E2423390Certificate of AnalysisFeb 05, 2026 T665791
E2423391Certificate of AnalysisFeb 05, 2026 T665791
Chemical and Physical Properties
SolubilitySoluble in water (partly miscible), methanol, and acetone.
Flash Point(°F)235.4 °F
Flash Point(°C)113°C
Molecular Weight282.500 g/mol
XLogP36.500
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count2
Rotatable Bond Count15
Exact Mass282.256 Da
Monoisotopic Mass282.256 Da
Topological Polar Surface Area37.300 Ų
Heavy Atom Count20
Formal Charge0
Complexity234.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count1
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds1
Covalently-Bonded Unit Count1
Documents & Articles
Citations of This Product
References
1. Jie Cheng, Yuling Li, Yunjun Wang, Jing Zhang, Tuanqi Sun, Li Zhang, Yinlong Guo.  (2022)  Quaterization Derivatization with Bis(Pyridine) Iodine Tetrafluoroboride: High-Sensitivity Mass Spectrometric Analysis of Unsaturated Fatty Acids in Human Thyroid Tissues.  ANALYTICAL CHEMISTRY,      [PMID:35916214] [10.1021/acs.analchem.2c01519]
2. Yumeng Yang, Dan Gao, Rui Qian, Yuyang Jiang.  (2020)  Polydopamine-Modified TS-1 Zeolite Framework Nanoparticles as a Matrix for the Analysis of Small Molecules by MALDI-TOF MS.  ACS Omega,      [PMID:32832749] [10.1021/acsomega.0c00992]
Solution Calculators
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