Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2-Methylmaleic acid diethyl ester
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

691-83-8

691-83-8 structure

691-83-8 structure

Name: 2-Methylmaleic acid diethyl ester
Chemical Name: diethyl 2-methylbut-2-enedioate
CAS Number: 691-83-8
Molecular Formula: C₉H₁₄O₄
Molecular Weight: 186.20500
Create Date: 2016-01-21 16:54:07
Modify Date: 2026-09-10 12:15:49

Name	diethyl 2-methylbut-2-enedioate
Synonyms	methylmaleic acid diethyl ester 2-Butenedioic acid, 2-methyl-, 1,4-diethyl ester, (2Z) Diethyl citraconate diethyl ester of citraconic acid Diethyl cis-1-propene-1,2-dicboxylate diethyl citraconate Methylmaleic acid diethyl ester diethyl mesoconate (Z)-2-Methyl-2-butenedioic acid diethyl ester diethyl (2Z)-2-methylbut-2-enedioate diethyl 2-methylmaleate

Molecular Formula	C₉H₁₄O₄
Molecular Weight	186.20500
Exact Mass	186.08900
PSA	52.60000
LogP	1.05890
Index of Refraction	1.445

HS Code	2917190090

Precursor 10
617-35-6 867-13-0 64-17-5 498-23-7
23360-63-6 78173-74-7 78173-51-0 616-02-4
498-24-8 1099-45-2
DownStream 10
498-23-7 498-24-8 22644-27-5 2409-52-1
7500-72-3 89317-80-6 2418-31-7 27995-29-5
5400-79-3 1590-02-9

HS Code	2917190090
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%

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