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3,5-Dimethoxybenzoic acid

CAS No.
1132-21-4
Chemical Name:
3,5-Dimethoxybenzoic acid
Synonyms
AKOS 227-39;AURORA 8636;AKOS BBS-00007826;TIMTEC-BB SBB007798;RARECHEM AL BO 0044;3,5-Dimethoxybenzoic;OTAVA-BB BB7013191651;3,5-dimethoxy-benzoicaci;3,5-DIMETHOXYBENZOIC ACID;3,5- twoMethoxybenzoic acid
CBNumber:
CB2334033
Molecular Formula:
C9H10O4
Molecular Weight:
182.17
MDL Number:
MFCD00002502
MOL File:
1132-21-4.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-28 00:19:22

3,5-Dimethoxybenzoic acid Properties

Melting point 178-180 °C (lit.)
Boiling point 275.56°C (rough estimate)
Density 1.2481 (rough estimate)
refractive index 1.4500 (estimate)
storage temp. Sealed in dry,Room Temperature
solubility almost transparency in hot Methanol
form Crystalline Powder
pka 3.96±0.10(Predicted)
color Almost white to light beige-pink
BRN 511834
InChI 1S/C9H10O4/c1-12-7-3-6(9(10)11)4-8(5-7)13-2/h3-5H,1-2H3,(H,10,11)
InChIKey IWPZKOJSYQZABD-UHFFFAOYSA-N
SMILES COc1cc(OC)cc(c1)C(O)=O
LogP 2.190
CAS DataBase Reference 1132-21-4(CAS DataBase Reference)
FDA UNII 38MY78ECKK
NIST Chemistry Reference 3,5-Dimethoxybenzoic acid(1132-21-4)
EPA Substance Registry System Benzoic acid, 3,5-dimethoxy- (1132-21-4)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H335-H315-H319
Precautionary statements  P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P280g-P305+P351+P338
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36
WGK Germany  3
Hazard Note  Irritant
TSCA  TSCA listed
HS Code  29189090
Storage Class 11 - Combustible Solids
NFPA 704
1
2 0

3,5-Dimethoxybenzoic acid price More Price(72)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich D132004 3,5-Dimethoxybenzoic acid 97% 1132-21-4 25g $112 2026-04-30 Buy
TCI Chemical D1534 3,5-Dimethoxybenzoic Acid >98.0%(GC)(T) 1132-21-4 25g $37 2026-04-30 Buy
TCI Chemical D1534 3,5-Dimethoxybenzoic Acid >98.0%(GC)(T) 1132-21-4 500g $280 2026-04-30 Buy
Biosynth FD00304 3,5-Dimethoxybenzoic acid 1132-21-4 500g $165 2026-06-04 Buy
Biosynth FD00304 3,5-Dimethoxybenzoic acid 1132-21-4 1000g $310 2026-06-04 Buy
Product number Packaging Price Buy
D132004 25g $112 Buy
D1534 25g $37 Buy
D1534 500g $280 Buy
FD00304 500g $165 Buy
FD00304 1000g $310 Buy

3,5-Dimethoxybenzoic acid Chemical Properties, Uses, Production

Chemical Properties

almost white to light beige-pink cryst. powder

Uses

3,5-Dimethoxybenzoic acid (3,5-DmeoxBA) can be used as a reactant for the synthesis of:

  • 5,7-Dimethoxy-3,4-diphenylisocoumarin by coupling with diphenylacetylene.
  • Biotin dimedone, a reagent used in the study of protein sulfenation.

It can also be used as a ligand to synthesize lanthanide complexes [Ln(3,5-DmeoxBA)3(phen)]2; where phen is 1,10-phenanthroline.

Definition

ChEBI: 3,5-dimethoxybenzoic acid is a methoxybenzoic acid that is benzoic acid which is substituted by methoxy groups at positions 3 and 5. It has a role as a plant metabolite. It is a conjugate acid of a 3,5-dimethoxybenzoate.

Purification Methods

Crystallise the acid from water, EtOH or aqueous acetic acid and dry it in a vacuum. [Beilstein 10 H 405, 10 I 195, 10 III 1446, 10 IV 1501.]

99-10-5
77-78-1
1132-21-4
Synthesis of 3,5-Dimethoxybenzoic acid from 3,5-Dihydroxybenzoic acid and Dimethyl sulfate
Global Suppliers ( 450)
Supplier Tel Email Country ProdList Advantage
Nanjing Tianyi Chemical Technology Co., Ltd 15150528611 779881375@qq.com China 64 58
YANGZHOU HENGCHUAN CHEMICAL CO., LTD. 13775575144 59033115@qq.com China 32 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
3B Pharmachem (Wuhan) International Co.,Ltd. 18930552037 3bsc@sina.com China 15813 69
future industrial shanghai co., ltd 400-0066400 13621662912 sales@jonln.com China 1989 65
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TAIYUAN RHF CO.,LTD. +86 351 7031519 sales@RHFChem.com China 2334 56
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
ShangHai DEMO Chemical Co.,Ltd 400-021-7337 2355568890 sales@demochem.com China 2569 57

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View Latest Price from 3,5-Dimethoxybenzoic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
3,5-Dimethoxybenzoic acid pictures 2026-09-11 3,5-Dimethoxybenzoic acid
1132-21-4
1KG 98%min 30tons/month WUHAN FORTUNA CHEMICAL CO., LTD
3,5-Dimethoxybenzoic acid pictures 2026-05-28 3,5-Dimethoxybenzoic acid
1132-21-4
$10.50 1KG 99% 10 ton Hebei Chuanghai Biotechnology Co,.LTD
3,5-Dimethoxybenzoic acid pictures 2026-03-20 3,5-Dimethoxybenzoic acid
1132-21-4
$25.00 100ASSAYS 99.5% 100 mt Hebei Chuanghai Biotechnology Co., Ltd
3,5-DIMETHOXYBENZOIC ACID AKOS 227-39 AKOS BBS-00007826 AURORA 8636 OTAVA-BB BB7013191651 RARECHEM AL BO 0044 TIMTEC-BB SBB007798 3,5-dimethoxy-benzoicaci Benzoic acid, 3,5-dimethoxy- 3,5-Dimethoxybenzoic 2-Fluorobenzonitrile 3,5-Dimethoxybenzoic Acid 3,5-DiMethoxybenzoic acid, 99% 25GR 3,5- twoMethoxybenzoic acid 3,5-DiMethoxybenzoic Acid, 97+% 3,5-Dimethoxybenzoic acid,99% 2-Methyl-159-nitrobenzyl&chloride 3,5- Dimethoxy benzoic acid -98% (2-Bromo-5-methoxy-18-methyl-phenyl)-methano 1132-21-4 Building Blocks for Dendrimers Building Blocks Carbonyl Compounds Carboxylic Acids C9 Organic Building Blocks FINE Chemical & INTERMEDIATES Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts Benzoic acid Organic acids Building Blocks for Dendrimers Functional Materials C9 Carbonyl Compounds Carboxylic Acids bc0001