7721-62-2

Basic information

• Product Name: 4,5-dimethoxy-2-methylbenzaldehyde
• Synonyms: 2-Methyl-4,5-dimethoxybenzaldehyde;6-Methylveratraldehyde;6-Methyl-veratraldehyde;NSC 109346
• CAS NO: 7721-62-2
• Molecular Formula: C₁₀H₁₂O₃
• Molecular Weight: 180.21
• EINECS: 231-759-8
• Mol File: 7721-62-2.mol
• Article Data: 19

Chemical Properties

• Melting Point: 86-87℃
• Boiling Point: 298℃
• Flash Point: 125℃
• Appearance: /
• Density: 1.089
• Vapor Pressure: 0.00127mmHg at 25°C
• Refractive Index: 1.531
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• CAS DataBase Reference: 4,5-dimethoxy-2-methylbenzaldehyde(CAS DataBase Reference)
• NIST Chemistry Reference: 4,5-dimethoxy-2-methylbenzaldehyde(7721-62-2)
• EPA Substance Registry System: 4,5-dimethoxy-2-methylbenzaldehyde(7721-62-2)

Safety Data

• Hazardous Substances Data: 7721-62-2(Hazardous Substances Data)

Usage

General Description

4,5-dimethoxy-2-methylbenzaldehyde is a specialized aromatic compound that falls under the category of benzaldehydes. Its IUPAC name is 2-methyl-4,5-dimethoxybenzaldehyde. The structure encompasses a benzene ring with aldehyde, two methoxy, and one methyl functional group attached to it. It has a molecular weight of 182.21 g/mol and its exact mass is 182.0946 g/mol. This chemical is widely used in organic synthesis and medicinal chemistry, frequently serving as a synthetic intermediate in the production of other chemicals. It can be identified by its CAS number 1205-17-0. In terms of safety, it should be handled with care, as with all chemicals, to prevent exposure and potential harm. Its detailed safety measures, storage, and disposal instructions should be referred to in its respective Safety Data Sheet (SDS).

InChI:InChI=1/C10H12O3/c1-7-4-9(12-2)10(13-3)5-8(7)6-11/h4-6H,1-3H3

Synthetic route

Dichloromethyl methyl ether (4885-02-3) + 1,2-dimethoxy-4-methylbenzene (494-99-5) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
With tin(IV) chloride In 1,2-dichloro-ethane 1.) ice-bath, 30 min, 2.) ice-bath temperature->room temperature, 24 h;	97%
With tin(IV) chloride In 1,2-dichloro-ethane 1.) 0 deg C, 20 min, 2.) RT, overnight;	15.2 g

1,2-dimethoxy-4-methylbenzene (494-99-5) + N,N-dimethyl-formamide (68-12-2, 33513-42-7) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
With trichlorophosphate at 90 - 95℃; Vilsmeier formylation; Inert atmosphere;	94%
Stage #1: N,N-dimethyl-formamide With trichlorophosphate for 0.5h; Cooling with ice; Stage #2: 1,2-dimethoxy-4-methylbenzene at 90℃; Temperature;	90%
With trichlorophosphate at 0 - 80℃; for 4h;	88%

2-(4,5-dimethoxy-2-methylphenyl)-1,3-dioxolane (113976-02-6) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
With hydrogenchloride In tetrahydrofuran Ambient temperature;	91%
With hydrogenchloride In diethyl ether; water at 20℃; for 2h;	5.55 g

C10H11N3O2 + acetic anhydride (108-24-7) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + C12H15NO3

Conditions	Yield
Stage #1: C10H11N3O2 With triphenylphosphine In tetrahydrofuran at 0℃; for 24h; Inert atmosphere; Stage #2: acetic anhydride In tetrahydrofuran at 0℃; for 2h; Inert atmosphere;	A 23% B 76%

2-methyl-4-methoxy-5-hydroxybenzaldehyde (7721-61-1) + dimethyl sulfate (77-78-1) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
With sodium hydroxide In ethanol for 3h; Heating;	73.7%

C10H11N3O2 → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Stage #1: C10H11N3O2 With triphenylphosphine In tetrahydrofuran at 20 - 25℃; for 24h; Inert atmosphere; Stage #2: With acetic anhydride In tetrahydrofuran at 0℃; for 2h; Inert atmosphere;	54%

hydrogen cyanide (74-90-8) + 1,2-dimethoxy-4-methylbenzene (494-99-5) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
With hydrogenchloride; aluminium trichloride at 40℃; Behandlung des Reaktionsprodukts mit Eis und verd.Salzsaeure;

(4,5-dimethoxy-2-methyl-benzyliden)-aniline (857592-14-4) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
With hydrogenchloride

4,5-Dimethoxy-2-vinyl-toluol → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
(i) aq. OsO4, THF, (ii) NaIO4; Multistep reaction;

1-bromo-4,5-dimethoxy-2-methylbenzene (52806-46-9) + N,N-dimethyl-formamide (68-12-2, 33513-42-7) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
With magnesium 1.) THF; Multistep reaction;
With tert.-butyl lithium 1) THF, pentane, 45 s, -78 deg C 2) THF a) 5 min, -78 deg C b) 2 h, r.t.; Yield given. Multistep reaction;

hydrogen cyanide (74-90-8) + 3.4-dimethyloxy-1-methyl-benzene → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
With hydrogenchloride; aluminium trichloride; benzene unter Kuehlung, dann bis 30grad und Zersetzung des Reaktionsproduktes durch Erhitzen mit verd.Salzsaeure;

1,2-dimethoxy-4-methylbenzene (494-99-5) + zinc cyanide → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
With hydrogenchloride; aluminium trichloride; benzene Eintragen Des Reaktionsgemisches in Eis;

2-Methoxy-4-methylphenol (93-51-6) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 2 steps 1: 45.2 percent / TiCl4 / CH2Cl2 / 3 h / 20 °C 2: 73.7 percent / 30percent NaOH / ethanol / 3 h / Heating View Scheme
Multi-step reaction with 2 steps 1: NaOH-solution 2: AlCl3; HCl / 40 °C / Behandlung des Reaktionsprodukts mit Eis und verd.Salzsaeure View Scheme

1,2-dimethoxybenzene (91-16-7) + 6-methoxy-3.4-dimethyl-coumarone-carboxylic acid-(2)-chloride → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 2 steps 1: NaOH 2: POCl3 View Scheme

2-bromo-4-methylanisole (22002-45-5) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 2 steps 1: CuCl / dimethylformamide; methanol / 4.5 h / Heating View Scheme
Multi-step reaction with 2 steps 1.1: copper(l) chloride / methanol / Reflux 2.1: trichlorophosphate / 0.5 h / Cooling with ice 2.2: 90 °C View Scheme

2-(2-bromo-4,5-dimethoxyphenyl)-1,3-dioxolane (103477-58-3) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 2 steps 1: 1.) n-butyllithium / 1.) THF, -78 deg C, 30 min, 2.) -78 deg C, 1 h 2: 91 percent / 10percent HCl / tetrahydrofuran / Ambient temperature View Scheme
Multi-step reaction with 2 steps 1.1: n-butyllithium / hexane; tetrahydrofuran / 0.5 h / -72 °C / Inert atmosphere 1.2: 2 h / -72 °C / Inert atmosphere 2.1: hydrogenchloride / water; diethyl ether / 2 h / 20 °C View Scheme

1,2-dimethoxy-4-methylbenzene (494-99-5) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 2 steps 1: 90 percent / Br2 / CCl4 / Ambient temperature 2: 1) t-BuLi / 1) THF, pentane, 45 s, -78 deg C 2) THF a) 5 min, -78 deg C b) 2 h, r.t. View Scheme
Multi-step reaction with 2 steps 1: Br2 / CCl4 2: 1.) Mg / 1.) THF View Scheme

(4,5-dimethoxy-2-methyl-phenyl)-glyoxylic acid ; compound with aniline → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 2 steps 1: Kochen 2: diluted hydrochloric acid View Scheme

(4,5-dimethoxy-2-vinyl-benzyl)-trimethyl-ammonium; iodide (59550-79-7) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 2 steps 1: (i) AgCl, H2O, (ii) Na-Hg 2: (i) aq. OsO4, THF, (ii) NaIO4 View Scheme

dichloromethyl-methyl ether + 1,1-dichloroethane (75-34-3) + 1,2-dimethoxy-4-methylbenzene (494-99-5) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
With tin(IV) chloride In dichloromethane

3,4-dimethoxy-benzaldehyde (120-14-9) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 4 steps 1.1: acetic acid; bromine / 0.25 h / 20 °C 2.1: toluene-4-sulfonic acid / benzene / 2 h / Dean-Stark; Reflux 3.1: n-butyllithium / hexane; tetrahydrofuran / 0.5 h / -72 °C / Inert atmosphere 3.2: 2 h / -72 °C / Inert atmosphere 4.1: hydrogenchloride / water; diethyl ether / 2 h / 20 °C View Scheme

2-bromo-4,5-dimethoxybenzaldehyde (5392-10-9) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 3 steps 1.1: toluene-4-sulfonic acid / benzene / 2 h / Dean-Stark; Reflux 2.1: n-butyllithium / hexane; tetrahydrofuran / 0.5 h / -72 °C / Inert atmosphere 2.2: 2 h / -72 °C / Inert atmosphere 3.1: hydrogenchloride / water; diethyl ether / 2 h / 20 °C View Scheme

4-Methylanisole (104-93-8) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 3 steps 1.1: nitric acid; potassium bromide; acetic anhydride / 50 °C / Cooling with ice 2.1: copper(l) chloride / methanol / Reflux 3.1: trichlorophosphate / 0.5 h / Cooling with ice 3.2: 90 °C View Scheme

p-cresol (106-44-5) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 4 steps 1.1: tetrabutylammomium bromide; potassium carbonate / Reflux 2.1: nitric acid; potassium bromide; acetic anhydride / 50 °C / Cooling with ice 3.1: copper(l) chloride / methanol / Reflux 4.1: trichlorophosphate / 0.5 h / Cooling with ice 4.2: 90 °C View Scheme

3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-one (55171-76-1) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 3 steps 1.1: sodium tetrahydroborate / methanol / 0.67 h / 0 - 20 °C / Inert atmosphere 2.1: diphenyl phosphoryl azide; 1,8-diazabicyclo[5.4.0]undec-7-ene / toluene; N,N-dimethyl-formamide / 22 h / 0 - 40 °C / Inert atmosphere 3.1: triphenylphosphine / tetrahydrofuran / 24 h / 20 - 25 °C / Inert atmosphere 3.2: 2 h / 0 °C / Inert atmosphere View Scheme

3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-one (55171-76-1) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + C12H15NO3

Conditions	Yield
Multi-step reaction with 3 steps 1.1: sodium tetrahydroborate / methanol / 0.67 h / 0 - 20 °C / Inert atmosphere 2.1: diphenyl phosphoryl azide; 1,8-diazabicyclo[5.4.0]undec-7-ene / toluene; N,N-dimethyl-formamide / 22 h / 0 - 40 °C / Inert atmosphere 3.1: triphenylphosphine / tetrahydrofuran / 24 h / 0 °C / Inert atmosphere 3.2: 2 h / 0 °C / Inert atmosphere View Scheme

4,5-trimethoxybenzocyclobuten-1-ol (55171-78-3) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions	Yield
Multi-step reaction with 2 steps 1.1: diphenyl phosphoryl azide; 1,8-diazabicyclo[5.4.0]undec-7-ene / toluene; N,N-dimethyl-formamide / 22 h / 0 - 40 °C / Inert atmosphere 2.1: triphenylphosphine / tetrahydrofuran / 24 h / 20 - 25 °C / Inert atmosphere 2.2: 2 h / 0 °C / Inert atmosphere View Scheme

4,5-trimethoxybenzocyclobuten-1-ol (55171-78-3) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + C12H15NO3

Conditions	Yield
Multi-step reaction with 2 steps 1.1: diphenyl phosphoryl azide; 1,8-diazabicyclo[5.4.0]undec-7-ene / toluene; N,N-dimethyl-formamide / 22 h / 0 - 40 °C / Inert atmosphere 2.1: triphenylphosphine / tetrahydrofuran / 24 h / 0 °C / Inert atmosphere 2.2: 2 h / 0 °C / Inert atmosphere View Scheme

(3,4-Dimethoxyphenyl)acetic acid (93-40-3) → 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2)

Conditions

Yield

Multi-step reaction with 6 steps 1.1: thionyl chloride / toluene / 2 h / 70 °C / Inert atmosphere 1.2: 0 - 20 °C / Inert atmosphere 2.1: silver trifluoroacetate; iodine / chloroform / 15 h / 20 °C / Inert atmosphere 3.1: tert.-butyl lithium / tetrahydrofuran; pentane / 1 h / -78 °C / Inert atmosphere 4.1: sodium tetrahydroborate / methanol / 0.67 h / 0 - 20 °C / Inert atmosphere 5.1: diphenyl phosphoryl azide; 1,8-diazabicyclo[5.4.0]undec-7-ene / toluene; N,N-dimethyl-formamide / 22 h / 0 - 40 °C / Inert atmosphere 6.1: triphenylphosphine / tetrahydrofuran / 24 h / 20 - 25 °C / Inert atmosphere 6.2: 2 h / 0 °C / Inert atmosphere View Scheme

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → 1-Dichloromethyl-4,5-dimethoxy-2-methyl-benzene (84452-08-4)

Conditions	Yield
With phosphorus pentachloride In tetrachloromethane	100%

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → 4,5-dimethoxy-2-methylbenzoic acid (20736-28-1, 131035-49-9)

Conditions	Yield
With sodium chlorite; sodium dihydrogenphosphate In water; dimethyl sulfoxide at 20℃;	95%
With sodium chlorite; aminosulfonic acid In tetrahydrofuran; water	92.5%
With sodium hydroxide; silver(l) oxide In ethanol at 50 - 60℃;	91%

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + sodium methylate (124-41-4) + acrylonitrile (107-13-1) → C14H17NO3 (7520-75-4)

Conditions	Yield
In methanol at 50℃;	92%

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + acrylonitrile (107-13-1) → C12H13NO2

Conditions	Yield
With sodium methylate In methanol at 28 - 32℃; for 5h; Temperature;	86.6%

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + sodium methylate (124-41-4) + acrylonitrile (107-13-1) → 4,5-dimethoxy-2-methyl-2'-(methoxymethyl)cinnamonitrile (7520-75-4)

Conditions	Yield
In methanol for 18h; Ambient temperature;	85.6%

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → 2-Methyl-4,5-dihydroxybenzaldehyde (120802-43-9)

Conditions	Yield
With pyridine hydrochloride at 180 - 190℃; for 4h;	84%
With pyridine hydrochloride at 180 - 190℃; Yield given;

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → 2-hydroxy-4,5-dimethoxytoluene (72312-07-3)

Conditions	Yield
With Perbenzoic acid In dichloromethane for 3h; Heating;	76.2%
With potassium hydroxide; water; 3-chloro-benzenecarboperoxoic acid 1.) CH2Cl2, r. t., 5 h; 2.) MeOH, 30 min; Yield given. Multistep reaction;
Multi-step reaction with 2 steps 1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 5 h / 20 °C / Cooling with ice 2: potassium hydroxide / water; methanol / 0.5 h View Scheme
Multi-step reaction with 2 steps 1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 5 h / 20 °C / Cooling with ice 2: potassium hydroxide / water; methanol / 0.5 h / Inert atmosphere; Cooling with ice View Scheme

malonic acid (141-82-2) + 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → (E)-3-(4,5-dimethoxy-2-methyl-phenyl)prop-2-enoic acid (105253-94-9)

Conditions	Yield
With piperidine; pyridine at 100℃; for 15h;	75%
With piperidine; pyridine at 80 - 115℃; for 4h; Knoevenagel Condensation;	68%

nitromethane (75-52-5) + 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → 4,5-dimethoxy-2-methyl-β-nitro-styrene (64372-66-3)

malonic acid (141-82-2) + 4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → 4,5-dimethoxy-2-methyl-ξ-cinnamic acid (105253-94-9)

Conditions	Yield
With piperidine; pyridine

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + 1-(2,3,4,6-tetramethoxyphenyl)ethanone (7508-05-6) → 4,5,2',3',4',6'-hexamethoxy-2-methyl-trans-chalcone

Conditions	Yield
With potassium hydroxide

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + semicarbazide hydrochloride (563-41-7) → 4,5-dimethoxy-2-methyl-benzaldehyde-semicarbazone (62036-33-3)

Conditions	Yield
With methanol; water; sodium acetate

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → 1,2-dimethoxy-4,5-dimethylbenzene (1128-57-0)

Conditions	Yield
With potassium hydroxide; hydrazine hydrate; diethylene glycol

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → 4,5-dimethoxy-2-methylbenzoic acid (20736-28-1, 131035-49-9) + m-hemipinic acid (577-68-4)

Conditions	Yield
With potassium permanganate

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → m-hemipinic acid (577-68-4)

Conditions	Yield
With potassium permanganate
With potassium permanganate; potassium carbonate In water for 1h; steam-bath;
With potassium permanganate; potassium carbonate In water at 90 - 95℃; for 1h;	2.58 g

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + acetic anhydride (108-24-7) → 4,5-dimethoxy-2-methyl-ξ-cinnamic acid (105253-94-9)

Conditions	Yield
With sodium acetate at 180℃; im Rohr;

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + o-hydroxyacetophenone (118-93-4) → 2'-hydroxy-4.5-dimethoxy-2-methyl-trans-chalcone

Conditions	Yield
With potassium hydroxide

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + aniline (62-53-3) → (4,5-dimethoxy-2-methyl-benzyliden)-aniline (857592-14-4)

Conditions	Yield
With ethanol

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + ethyl 2-cyanoacetate (105-56-6) → 2-cyano-3t-(4,5-dimethoxy-2-methyl-phenyl)-acrylic acid ethyl ester (58531-10-5)

Conditions	Yield
With piperidine; ethanol

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) + 1-(4-methoxyphenyl)ethanone (100-06-1) → 4.5.4'-trimethoxy-2-methyl-trans-chalcone

Conditions	Yield
With potassium hydroxide

4,5-dimethoxy-2-methylbenzaldehyde (7721-62-2) → 2-methyl-4-methoxy-5-hydroxybenzaldehyde (7721-61-1)

Conditions	Yield
With sulfuric acid at 65 - 75℃; for 17h; demethylation;

Upstream product

• 74-90-8 hydrogen cyanide 
• 494-99-5 1,2-dimethoxy-4-methylbenzene 
• 857592-14-4 (4,5-dimethoxy-2-methyl-benzyliden)-aniline 
• 68-12-2 N,N-dimethyl-formamide 
• 4885-02-3 Dichloromethyl methyl ether 
• 113976-02-6 2-(4,5-dimethoxy-2-methylphenyl)-1,3-dioxolane 
• 52806-46-9 1-bromo-4,5-dimethoxy-2-methylbenzene 
• 7721-61-1 2-methyl-4-methoxy-5-hydroxybenzaldehyde 
• 77-78-1 dimethyl sulfate 
• 93-51-6 2-Methoxy-4-methylphenol 
• 91-16-7 1,2-dimethoxybenzene 
• 22002-45-5 2-bromo-4-methylanisole 
• 103477-58-3 2-(2-bromo-4,5-dimethoxyphenyl)-1,3-dioxolane 
• 59550-79-7 (4,5-dimethoxy-2-vinyl-benzyl)-trimethyl-ammonium; iodide 

Downstream Products

• 64372-66-3 4,5-dimethoxy-2-methyl-β-nitro-styrene 
• 105253-94-9 4,5-dimethoxy-2-methyl-ξ-cinnamic acid 
• 62036-33-3 4,5-dimethoxy-2-methyl-benzaldehyde-semicarbazone 
• 1128-57-0 1,2-dimethoxy-4,5-dimethylbenzene 
• 20736-28-1 4,5-dimethoxy-2-methylbenzoic acid 
• 577-68-4 m-hemipinic acid 
• 58531-10-5 2-cyano-3t-(4,5-dimethoxy-2-methyl-phenyl)-acrylic acid ethyl ester 
• 105253-94-9 (E)-3-(4,5-dimethoxy-2-methyl-phenyl)prop-2-enoic acid 
• 72312-07-3 2-hydroxy-4,5-dimethoxytoluene 
• 7721-61-1 2-methyl-4-methoxy-5-hydroxybenzaldehyde 
• 120802-43-9 2-Methyl-4,5-dihydroxybenzaldehyde 
• 84452-08-4 1-Dichloromethyl-4,5-dimethoxy-2-methyl-benzene 
• 80067-40-9 ethyl-2,4-diacetyl-3-(2-methyl-4,5-dimethoxyphenyl)-glutarate 
• 7520-75-4 4,5-dimethoxy-2-methyl-2'-(methoxymethyl)cinnamonitrile 

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