2,6-Di-tert-butyl-4-methylphenol(BHT) - E 321 , CAS No.128-37-0

CAS: 128-37-0 Cat. No.: B431698 Formula: C15H24O Molecular Weight: 220.35 Beilstein Registry Number: 6(3)2073 EC Number: 204-881-4
AVAILABLE TO ORDER
GRADE & PURITY E 321
Synonyms
2,6-Di-tert-butyl-1-hydroxy-4-methylbenzene | E321 | E-321 | Agidol 1 | FEMA 2184 | Ional | DTXSID2020216 | INS NO.321 | Tenamen 3 | 2,6-Bis(1,1-dimethylethyl)-4-methylphenol | 4-Methyl-2,6-di-terc. butylfenol | Antrancine 8 | Chemanox 11 | Phenol, 2,6-bi
Storage
Protected from light,Room temperature,Argon charged,Desiccated
Shipped In
Normal
★
Size
USA
Germany (EU)*
Price
Qty
250g
B431698-250g
Made to order · 8–12 wks
$49.90
Enter a quantity for the sizes you want to add.
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Why this grade

E 321 for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Protected from light,Room temperature,Argon charged,Desiccated Ships Normal 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 271 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Butylhydroxytoluene is an antioxidant and is typically used as an additive for the preservation of food.

Specifications

Synonyms
2,6-Di-tert-butyl-1-hydroxy-4-methylbenzene | E321 | E-321 | Agidol 1 | FEMA 2184 | Ional | DTXSID2020216 | INS NO.321 | Tenamen 3 | 2,6-Bis(1,1-dimethylethyl)-4-methylphenol | 4-Methyl-2,6-di-terc. butylfenol | Antrancine 8 | Chemanox 11 | Phenol, 2,6-bi
Specifications & Purity
E 321
Storage
Protected from light,Room temperature,Argon charged,Desiccated
Shipped In
Normal
Names and Identifiers
Canonical Smiles
CC1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C
IUPAC Name
2,6-ditert-butyl-4-methylphenol
InChIKey
NLZUEZXRPGMBCV-UHFFFAOYSA-N
INCHI
1S/C15H24O/c1-10-8-11(14(2,3)4)13(16)12(9-10)15(5,6)7/h8-9,16H,1-7H3
Isomeric SMILES
CC1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C
RTECS
GO7875000
Molecular Weight
220.35
Beilstein
6(3)2073
Reaxy-Rn
1911640
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1911640&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
SubclassPhenylpropanes
Intermediate Tree Nodes Not available
Direct ParentPhenylpropanes
Alternative Parents Para cresols  Toluenes  Organooxygen compounds  Hydrocarbon derivatives  
Molecular FrameworkAromatic homomonocyclic compounds
Substituents Phenylpropane - P-cresol - Toluene - Phenol - Organic oxygen compound - Hydrocarbon derivative - Organooxygen compound - Aromatic homomonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as phenylpropanes. These are organic compounds containing a phenylpropane moiety.
External Descriptors phenols
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
CA2 Tclin Carbonic anhydrase 2 (1 Activities)
Activity TypeActivity Value -log(M)Mechanism of ActionActivity ReferencePublications (PubMed IDs)
CA2 Tclin Carbonic anhydrase II (17698 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
VDR Tclin Vitamin D receptor (26531 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
PTH1R Tclin Parathyroid hormone receptor (47172 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
PPARA Tclin Peroxisome proliferator-activated receptor alpha (9197 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
KCNH2 Tclin HERG (29587 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
RXRA Tclin Retinoid X receptor alpha (3637 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CXCL8 Tchem Interleukin-8 (642 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CA1 Tclin Carbonic anhydrase I (13240 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
POLB Tchem DNA polymerase beta (23632 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
PLK1 Tchem Serine/threonine-protein kinase PLK1 (28605 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
NOS1 Tchem Nitric-oxide synthase, brain (1786 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
ALDH1A1 Tchem Aldehyde dehydrogenase 1A1 (77053 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
NR1H4 Tclin Bile acid receptor FXR (6228 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CYP2D6 Tclin Cytochrome P450 2D6 (33882 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
NFKB1 Tclin Nuclear factor NF-kappa-B p105 subunit (1459 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
NOS3 Tchem Nitric-oxide synthase, endothelial (1452 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CYP1A2 Tchem Cytochrome P450 1A2 (26471 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CYP2C9 Tchem Cytochrome P450 2C9 (32119 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CYP2C19 Tchem Cytochrome P450 2C19 (29246 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CYP3A4 Tclin Cytochrome P450 3A4 (53859 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
HL-60 (67320 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
HUVEC (11049 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Liver microsomes (16955 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
TDP1 Tchem Tyrosyl-DNA phosphodiesterase 1 (345557 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
SMN1 Tchem Survival motor neuron protein (34246 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
GMNN Tbio Geminin (128009 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT1A6 Tbio UDP-glucuronosyltransferase 1-6 (221 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT1A9 Tbio UDP-glucuronosyltransferase 1-9 (343 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
Hdac6 Histone deacetylase 6 (222 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CAPN1 Calpain 1 (219 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Staphylococcus aureus (210822 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Streptococcus mutans (2687 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Bacillus subtilis (32866 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mycobacterium tuberculosis (203094 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Corynebacterium ammoniagenes (75 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Cutibacterium acnes (887 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Plasmodium falciparum (966862 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Leishmania donovani (89745 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mus musculus (284745 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Rattus norvegicus (775804 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
L1210 (27553 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
C6 (2371 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
BV-2 (3710 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
LOX1.1 Seed lipoxygenase-1 (463 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
rep Replicase polyprotein 1ab (378 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Txnrd1 Thioredoxin reductase 1, cytoplasmic (45279 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Vibrio harveyi (399 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Brain (1 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mycobacterium tuberculosis variant bovis BCG (1626 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Nfe2l2 Nuclear factor erythroid 2-related factor 2 (214 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
vpr Aberrant vpr protein (14595 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
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
A2605446Certificate of AnalysisJan 10, 2026 B431698
A2605447Certificate of AnalysisJan 10, 2026 B431698
A2605450Certificate of AnalysisJan 10, 2026 B431698
Chemical and Physical Properties
SensitivityAir sensitive;Light sensitive
Refractive Index1.4859
Flash Point(°F)260°F
Flash Point(°C)(open)127℃
Boil Point(°C)265°C
Melt Point(°C)70°C
Molecular Weight220.350 g/mol
XLogP35.300
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count1
Rotatable Bond Count2
Exact Mass220.183 Da
Monoisotopic Mass220.183 Da
Topological Polar Surface Area20.200 Ų
Heavy Atom Count16
Formal Charge0
Complexity207.000
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
Documents & Articles
Photo-Crosslinking and Patterning of PEG-Based Hydrogels (2D/3D): Principles, Method Comparisons, and Product Selection Guidelines
Fatty Acids from Basics to Lab Practice: Structural Classification, Research Uses, and Selection Tips (with an Aladdin Representative Product Quick-Reference Table)
Functions and Significance of Common Physiological and Biochemical Indices in Animals and Plants
Plant Omics Panorama: Workflow Frameworks and Multi-Omics Integration from Genomics to Transcriptomics, Proteomics, and Metabolomics
Procyanidins: Structural Features and Key Points for Research and Application
Chlorophyll: Structural Features, Physicochemical Properties, and Key Points for Research and Industrial Applications
Review of the Structural Characteristics, Biological Functions, and Application Advances of Lycopene
Rubber Aging Pathways and Antidegradant Selection: From Thermo-Oxidative Aging and Ozone Cracking to Migration and Extraction Control
Key Control Points in Polyurethane Coating Formulation Design and Application
Failure Mechanisms, Application Limitations, and Systematic Improvement Directions for Polyester Coatings
Principles, Method Selection, and Result Interpretation for Malondialdehyde Content Detection
Mechanisms and Control of Coating Yellowing: From Chromophoric Structure Formation to Source Diagnosis and Formulation Optimization
Why Limonene Can Soften Greasy Soils Yet Is Difficult to Dissolve in Water: Understanding the Cleaning Mechanism and Formulation Applications of Naturally Derived Solvents from Molecular Structure
How to Extend Fragrance Longevity in Personal and Home Care Products: Fragrance Structure, Surface Deposition, and Release Modulation
A Practical Guide to Fragrance Compositions: Turning a Black-Box Formula into an Engineerable System—Compatibility, Stability, Controlled Release, Traceability, and Selection
Molecular Structure, Photochemical Behavior, and Role of Octocrylene in Sunscreen Formulations
Protective and Potential Reparative Mechanisms of Prinsepia utilis Seed Oil on the Skin Barrier: Fatty Acid Composition, Epidermal Lipid Metabolism, and Research Evidence
UVA Absorption Mechanism of Avobenzone: Keto–Enol Tautomerism, Photochemical Instability, and Formulation Photostabilization Strategies
Mechanisms of Retinol Action in the Skin: From Metabolic Activation and RAR/RXR-Mediated Transcriptional Regulation to Epidermal Renewal and Collagen Homeostasis
How Coenzyme Q10 Acts on the Skin: Mitochondrial Electron Transfer, Antioxidant Protection of Membrane Lipids, and Lipid-Carrier Delivery
Photoinduced Alkane C(sp³)–H Functionalization in the Absence of an Added Photocatalyst: Trace-Iron Effects
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Frequently Asked Questions

How should this product be stored?
Store at room temperature, protected from light, desiccated, under argon. It is supplied under an argon blanket; reseal under inert gas after each use.
How is this product shipped?
This product ships under standard ambient conditions. No temperature-controlled packaging is required.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 128-37-0, the molecular formula is C15H24O, and the molecular weight is 220.35 g/mol. InChIKey NLZUEZXRPGMBCV-UHFFFAOYSA-N.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.

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