Cas no 762-21-0 (1,4-diethyl but-2-ynedioate)
1,4-Diethyl but-2-ynedioate is a diester derivative of but-2-ynedioic acid, characterized by its acetylene functionality and ester groups. This compound is primarily utilized as a versatile intermediate in organic synthesis, particularly in the formation of conjugated systems and heterocyclic compounds. Its rigid alkyne core and reactive ester moieties make it suitable for click chemistry applications, including Huisgen cycloadditions. The product offers high purity and stability under standard conditions, ensuring consistent performance in synthetic workflows. Its structural features enable efficient cross-coupling and cyclization reactions, making it valuable in pharmaceutical and materials science research. Proper handling under inert conditions is recommended due to its sensitivity to moisture and strong acids or bases.
1,4-diethyl but-2-ynedioate structure
Product Name:1,4-diethyl but-2-ynedioate
CAS No:762-21-0
MF:C8H10O4
MW:170.162602901459
MDL:MFCD00009186
CID:39770
PubChem ID:69803
Update Time:2025-05-23
1,4-diethyl but-2-ynedioate Chemical and Physical Properties
Names and Identifiers
-
- Diethyl but-2-ynedioate
- Diethyl Acetylenedicarboxylate
- 1,4-Diethyl but-2-ynedioate
- 2-butynedioic acid diethyl ester
- ACETYLENEDICARBOXYLIC ACID DIETHYL ESTER
- Bis(carboethoxy)acetylene
- Bis-(Ethoxycarbonyl)acetylene
- but-2-ynedioic acid diethyl ester
- butynedioic acid diethyl ester
- Diethyl 2-butynedioate
- Diethyl acetylenedicarboxylic acid
- Diethyl but-2-yne-1,4-dioate
- DIETHYL BUTYNEDIOATE
- YL2-BUTYNEDIOATE
- NSC-674446
- NS00037766
- NSC-67975
- Acetylenedicarboxylic acid, diethyl ester
- A0089
- Diethylacetylenedicarboxylate
- Diethyl acetylenedicarboxylate, 95%
- F0001-1933
- diethyl acetylendicarboxylate
- MFCD00009186
- 2-Butynedioic acid, diethyl ester
- AI3-04336
- diethyl-acetylene dicarboxylate
- EINECS 212-095-8
- Z104476782
- BW8YXV5QMM
- diethyl acetylene- dicarboxylate
- NSC 67975
- Di-Ethyl acetylenedicarboxylate
- CHEMBL4086918
- 762-21-0
- NSC674446
- 2-Butynedioic acid, 1,4-diethyl ester
- FT-0624774
- WLN: 2OV1UU1VO2
- InChI=1/C8H10O4/c1-3-11-7(9)5-6-8(10)12-4-2/h3-4H2,1-2H3
- Diethyl 2-butynedioate #
- STRNXFOUBFLVIN-UHFFFAOYSA-
- NSC67975
- diethylacetylene dicarboxylate
- DTXSID20227055
- A838645
- diethyl acetylene-dicarboxylate
- acetylene dicarboxylic acid diethyl ester
- AS-13494
- SCHEMBL18446
- EN300-20088
- ANTINEOPLASTIC-674446
- AKOS000120049
- CS-W020105
- W-104373
- Diethyl acetylene dicarboxylate
- STL185611
- DB-056036
- 1,4-diethyl but-2-ynedioate
-
- MDL： MFCD00009186
- Inchi： 1S/C8H10O4/c1-3-11-7(9)5-6-8(10)12-4-2/h3-4H2,1-2H3
- InChI Key： STRNXFOUBFLVIN-UHFFFAOYSA-N
- SMILES： O(C(C#CC(=O)OCC)=O)CC
- BRN： 743166
Computed Properties
- Exact Mass: 170.05800
- Monoisotopic Mass: 170.057909
- Isotope Atom Count: 0
- Hydrogen Bond Donor Count: 0
- Hydrogen Bond Acceptor Count: 4
- Heavy Atom Count: 12
- Rotatable Bond Count: 4
- Complexity: 208
- Covalently-Bonded Unit Count: 1
- Defined Atom Stereocenter Count: 0
- Undefined Atom Stereocenter Count : 0
- Defined Bond Stereocenter Count: 0
- Undefined Bond Stereocenter Count: 0
- Surface Charge: 0
- Tautomer Count: nothing
- XLogP3: 1.5
- Topological Polar Surface Area: 52.6
Experimental Properties
- Color/Form: Transparent light yellow liquid
- Density: 1.063?g/mL?at 25?°C(lit.)
- Melting Point: 1°C(lit.)
- Boiling Point: 115°C/18mmHg(lit.)
- Flash Point: Fahrenheit: 201.2 ° f
Celsius: 94 ° c - Refractive Index: n20/D 1.443(lit.)
- Water Partition Coefficient: Soluble in ethanol, ethyl ether, CCl4, Insoluble in water.
- PSA: 52.60000
- LogP: 0.11600
1,4-diethyl but-2-ynedioate Security Information
-
Symbol:
- Prompt：dangerous
- Signal Word：Danger
- Hazard Statement： H314
- Warning Statement： P260-P264-P280-P301+P330+P331+P310-P303+P361+P353+P310+P363-P304+P340+P310-P305+P351+P338+P310-P405-P501
- Hazardous Material transportation number：UN 3265 8/PG 2
- WGK Germany：3
- Hazard Category Code： 34
- Safety Instruction： S26-S36/37/39-S45-S25
- FLUKA BRAND F CODES：8-10
-
Hazardous Material Identification：
- HazardClass：8
- PackingGroup：III
- Storage Condition：2-8°C
- Safety Term：8
- Packing Group：III
- Risk Phrases：R34
- Packing Group：III
- Hazard Level：8
1,4-diethyl but-2-ynedioate Customs Data
- HS CODE：29171990
- Customs Data：
China Customs Code:
2917190090Overview:
2917190090 Other acyclic polycarboxylic acids. VAT:17.0% Tax refund rate:9.0% Regulatory conditions:nothing MFN tariff:6.5% general tariff:30.0%
Declaration elements:
Product Name, component content, use to, Terephthalic acid please specify4-CBAvalue, Terephthalic acid please specifyP-TLacid value, Terephthalic acid please indicate color, Terephthalic acid please indicate moisture
Summary:
2917190090 acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%
1,4-diethyl but-2-ynedioate Pricemore >>
| Related Categories | No. | Product Name | Cas No. | Purity | Specification | Price | update time | Inquiry |
|---|---|---|---|---|---|---|---|---|
| CHENG DOU FEI BO YI YAO Technology Co., Ltd. | FD02499-1000g |
Diethyl acetylenedicarboxylate |
762-21-0 | 95%% | 1000g |
$402 | 2023-09-07 | |
| TRC | D443163-500mg |
Diethyl Acetylenedicarboxylate |
762-21-0 | 500mg |
$64.00 | 2023-05-18 | ||
| TRC | D443163-1g |
Diethyl Acetylenedicarboxylate |
762-21-0 | 1g |
$ 60.00 | 2022-06-02 | ||
| TRC | D443163-2.5g |
Diethyl Acetylenedicarboxylate |
762-21-0 | 2.5g |
$87.00 | 2023-05-18 | ||
| TRC | D443163-5g |
Diethyl Acetylenedicarboxylate |
762-21-0 | 5g |
$98.00 | 2023-05-18 | ||
| SHANG HAI XIAN DING Biotechnology Co., Ltd. | A0089-25ml |
1,4-diethyl but-2-ynedioate |
762-21-0 | 95.0%(GC) | 25ml |
￥390.0 | 2022-05-30 | |
| SHANG HAI XIAN DING Biotechnology Co., Ltd. | D119R-5g |
1,4-diethyl but-2-ynedioate |
762-21-0 | 97% | 5g |
￥65.0 | 2022-05-30 | |
| SHANG HAI XIAN DING Biotechnology Co., Ltd. | D119R-100g |
1,4-diethyl but-2-ynedioate |
762-21-0 | 97% | 100g |
￥865.0 | 2022-05-30 | |
| SHANG HAI XIAN DING Biotechnology Co., Ltd. | D119R-25g |
1,4-diethyl but-2-ynedioate |
762-21-0 | 97% | 25g |
￥230.0 | 2022-05-30 | |
| Apollo Scientific | OR59420-25g |
Diethyl but-2-yne-1,4-dioate |
762-21-0 | 95% | 25g |
￡18.00 | 2025-02-20 |
1,4-diethyl but-2-ynedioate Suppliers
Suzhou Senfeida Chemical Co., Ltd
Gold Member
Audited Supplier
(CAS:762-21-0)Diethyl acetylenedicarboxylate
Order Number:sfd19153
Stock Status:in Stock
Quantity:200kg
Purity:99.9%
Pricing Information Last Updated:Friday, 19 July 2024 14:38
Price ($):discuss personally
Email:[email protected]
Amadis Chemical Company Limited
Gold Member
Audited Supplier
(CAS:762-21-0)1,4-diethyl but-2-ynedioate
Order Number:A838645
Stock Status:in Stock
Quantity:500g
Purity:99%
Pricing Information Last Updated:Friday, 30 August 2024 06:43
Price ($):314.0
Email:[email protected]
Tiancheng Chemical (Jiangsu) Co., Ltd
Gold Member
Audited Supplier
(CAS:762-21-0)丁炔二酸二乙酯
Order Number:LE5717053
Stock Status:in Stock
Quantity:25KG,200KG,1000KG
Purity:99%
Pricing Information Last Updated:Friday, 20 June 2025 12:44
Price ($):discuss personally
Email:[email protected]
1,4-diethyl but-2-ynedioate Related Literature
-
Gaurav J. Shah,Eric P.-Y. Chiou,Ming C. Wu,Chang-Jin “CJ” Kim Lab Chip, 2009,9, 1732-1739
-
Eléonore Resongles,Corinne Casiot,Fran?oise Elbaz-Poulichet,Rémi Freydier,Odile Bruneel,Christine Piot,Sophie Delpoux,Aurélie Volant,Angélique Desoeuvre Environ. Sci.: Processes Impacts, 2013,15, 1536-1544
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Kay S. McMillan,Anthony G. McCluskey,Annette Sorensen,Marie Boyd,Michele Zagnoni Analyst, 2016,141, 100-110
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Manickam Bakthadoss,Tadiparthi Thirupathi Reddy,Vishal Agarwal,Duddu S. Sharada Chem. Commun., 2022,58, 1406-1409
-
Xiaotong Feng,Lei Bian,Jie Ma,Lei Zhou,Xiayan Wang,Guangsheng Guo,Qiaosheng Pu Chem. Commun., 2019,55, 3963-3966
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