2,5-Bis(5-tert-butyl-benzoxazol-2-yl)thiophene - ≥99% , CAS No.7128-64-5

CAS: 7128-64-5 Cat. No.: B103121 Molecular Weight: 430.56 Beilstein Registry Number: 631803 EC Number: 230-426-4
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
BBOT
Storage
Room temperature
Shipped In
Normal
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Price
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5g
B103121-5g
4

$9.90

$14.90
Save $5.00 (33.56%)
25g
B103121-25g
3

$15.90

$23.90
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100g
B103121-100g
1

$31.90

$47.90
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250g
B103121-250g
1

$48.90

$73.90
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500g
B103121-500g
1

$64.90

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Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

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

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Literature proof

Cited in 7 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
BBOT
Specifications & Purity
≥99%
Storage
Room temperature
Shipped In
Normal
Purity
≥99%
Names and Identifiers
Pubchem Sid488189325
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488189325
Canonical SmilesCC(C)(C)C1=CC2=C(C=C1)OC(=N2)C3=CC=C(S3)C4=NC5=C(O4)C=CC(=C5)C(C)(C)C
IUPAC Name5-tert-butyl-2-[5-(5-tert-butyl-1,3-benzoxazol-2-yl)thiophen-2-yl]-1,3-benzoxazole
InChIKeyAIXZBGVLNVRQSS-UHFFFAOYSA-N
INCHI1S/C26H26N2O2S/c1-25(2,3)15-7-9-19-17(13-15)27-23(29-19)21-11-12-22(31-21)24-28-18-14-16(26(4,5)6)8-10-20(18)30-24/h7-14H,1-6H3
Isomeric SMILES CC(C)(C)C1=CC2=C(C=C1)OC(=N2)C3=CC=C(S3)C4=NC5=C(O4)C=CC(=C5)C(C)(C)C
WGK Germany 1
RTECS DM4888332
Molecular Weight 430.56
Beilstein 631803
Reaxy-Rn 631803
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=631803&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.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassBenzoxazoles
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentBenzoxazoles
Alternative Parents 2,5-disubstituted thiophenes  Benzenoids  Oxazoles  Heteroaromatic compounds  Oxacyclic compounds  Azacyclic compounds  Organopnictogen compounds  Organooxygen compounds  Organonitrogen compounds  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Benzoxazole - 2,5-disubstituted thiophene - Benzenoid - Azole - Oxazole - Thiophene - Heteroaromatic compound - Oxacycle - Azacycle - Organic nitrogen compound - Hydrocarbon derivative - Organopnictogen compound - Organooxygen compound - Organonitrogen compound - Organic oxygen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as benzoxazoles. These are organic compounds containing a benzene fused to an oxazole ring Oxazole is five-membered aromatic ring with a nitrogen and an oxygen atoms at the 1- and 3-position, respectively.
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.

17 results found

Lot NumberCertificate TypeDateItem
H1803120Certificate of AnalysisMar 20, 2026 B103121
B2624326Certificate of AnalysisMar 03, 2026 B103121
A2212185Certificate of AnalysisOct 13, 2025 B103121
A2212186Certificate of AnalysisOct 13, 2025 B103121
A2212184Certificate of AnalysisOct 13, 2025 B103121
K2105454Certificate of AnalysisAug 12, 2025 B103121
H2025160Certificate of AnalysisJun 03, 2024 B103121
L2508053Certificate of AnalysisMar 25, 2024 B103121
G2507091Certificate of AnalysisMar 25, 2024 B103121
D2409220Certificate of AnalysisMar 25, 2024 B103121
D2409219Certificate of AnalysisMar 25, 2024 B103121
D2409218Certificate of AnalysisMar 25, 2024 B103121
D2409217Certificate of AnalysisMar 25, 2024 B103121
E2324023Certificate of AnalysisDec 27, 2021 B103121
C2309076Certificate of AnalysisDec 27, 2021 B103121
B2522191Certificate of AnalysisDec 27, 2021 B103121
B2302898Certificate of AnalysisDec 27, 2021 B103121

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Chemical and Physical Properties
SolubilitySoluble in acetone and toluene. Insoluble in water.
Melt Point(°C)199-201°C
Molecular Weight430.600 g/mol
XLogP38.000
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count5
Rotatable Bond Count4
Exact Mass430.171 Da
Monoisotopic Mass430.171 Da
Topological Polar Surface Area80.300 Ų
Heavy Atom Count31
Formal Charge0
Complexity590.000
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
Citations of This Product
References
1. Shuqiang Peng, Qiuquan Guo, Naveen Thirunavukkarasu, Yanling Zheng, Zian Wang, Longhui Zheng, Lixin Wu, Zixiang Weng.  (2022)  Tailoring of photocurable ionogel toward high resilience and low hysteresis 3D printed versatile porous flexible sensor.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2022.135593]
2. Chen Yisheng, Huang Caihong, Xu Xueming.  (2021)  HPTLC-Densitometry Screening and Mass Identification of Fluorescent Whitening Agents Contamination in Cereal Flour.  Food Analytical Methods,  14  (4): (814-822).  [PMID:] [10.1007/s12161-020-01935-9]
3. Shuqiang Peng, Yuewei Li, Lixin Wu, Jie Zhong, Zixiang Weng, Longhui Zheng, Zhi Yang, Jia-Tao Miao.  (2020)  3D Printing Mechanically Robust and Transparent Polyurethane Elastomers for Stretchable Electronic Sensors.  ACS Applied Materials & Interfaces,      [PMID:31927985] [10.1021/acsami.9b20631]
4. Qingxin Jin, Chengyun Wang, Han Wu, Xin Luo, Jiaqi Li, Guangmeng Ma, Yu Li, Chunyi Luo, Fawei Guo, Yu Long.  (2024)  3D Printing of Capacitive Pressure Sensors with Tuned Wide Detection Range and High Sensitivity Inspired by Bio-Inspired Kapok Structures.  MACROMOLECULAR RAPID COMMUNICATIONS,      [PMID:38325804] [10.1002/marc.202300668]
5. Yisheng Chen, Xingjun Xi.  (2024)  Bio-screening and quantification of methyl paraben in vinegar and coconut juice separated by HPTLC.  Food Science and Human Wellness,      [PMID:] [10.26599/FSHW.2022.9250135]
6. Jiana Lin, Xiaoyan Ouyang, Yuling Hu, Gongke Li, Qisheng Zhong.  (2024)  β-Cyclodextrin/calix[4]arene hybrid porous organic polymer membrane for synergistic extraction of fluorescent whitening agents migrating from food contact materials.  JOURNAL OF CHROMATOGRAPHY A,      [PMID:39216285] [10.1016/j.chroma.2024.465298]
7. Purun Wang, Liping Gong, Jiajun Yu, Shilong Duan, Zimu Li, Min Sang, Qiankun Chen, Shiyu Lin, Sheng Wang, Huaxia Deng, Weihua Li, Shuai Liu.  (2026)  Bioinspired Gradient Minimal Surface Structural Materials via Vat Photopolymerization Towards Efficient Impact Resistance.  ADVANCED FUNCTIONAL MATERIALS,      [PMID:] [10.1002/adfm.202530573]
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