4-Methoxythiophenol

Modify Date: 2026-07-03 19:26:30

4-Methoxythiophenol Structure
4-Methoxythiophenol structure
Common Name 4-Methoxythiophenol
CAS Number 696-63-9 Molecular Weight 140.203
Density 1.1±0.1 g/cm3 Boiling Point 224.9±13.0 °C at 760 mmHg
Molecular Formula C7H8OS Melting Point N/A
MSDS Chinese USA Flash Point 96.1±0.0 °C
Symbol GHS07
GHS07
Signal Word Warning

Summary: 4-Methoxybenzenethiol (4-Methoxythiophenol), CAS number 696-63-9, with molecular formula C7H8OS and molecular weight 140.203, is a colorless pale yellow liquid with a boiling point of 224.9±13.0 °C and a density of 1.1±0.1 g/cm3. For research-use only, not for medical or clinical usage.


 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 4-methoxybenzenethiol
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.1±0.1 g/cm3
Boiling Point 224.9±13.0 °C at 760 mmHg
Molecular Formula C7H8OS
Molecular Weight 140.203
Flash Point 96.1±0.0 °C
Exact Mass 140.029587
PSA 48.03000
LogP 2.46
Vapour Pressure 0.1±0.4 mmHg at 25°C
Index of Refraction 1.566
InChIKey NIFAOMSJMGEFTQ-UHFFFAOYSA-N
SMILES COc1ccc(S)cc1

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
DC1800000
CHEMICAL NAME :
Benzenethiol, p-methoxy-
CAS REGISTRY NUMBER :
696-63-9
BEILSTEIN REFERENCE NO. :
1446910
LAST UPDATED :
199612
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C7-H8-O-S
MOLECULAR WEIGHT :
140.21
WISWESSER LINE NOTATION :
SHR DO1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
56 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#04701

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H302-H312-H315-H319-H332-H335
Precautionary Statements P261-P280-P305 + P351 + P338
Personal Protective Equipment Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes Xn:Harmful;
Risk Phrases R22;R36/37/38
Safety Phrases S26-S36/37-S37/39
RIDADR UN 2810 6.1/PG 3
WGK Germany 3
RTECS DC1800000
Hazard Class 6.1
HS Code 2920190090

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2930909090
Summary 2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

 Articles4

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Synthesis and antibacterial activity of some novel 4-oxopyrido[2,3-a]phenothiazines.

Arch. Pharm. (Weinheim) 347(11) , 861-72, (2014)

A series of substituted 4-oxopyrido[2,3-a]phenothiazine-3-carboxylic acids (6a-d) were prepared via cyclization of the corresponding ethyl 7-(arylthioxy)-8-nitro(or azido)-4-oxoquinoline-3-carboxylate...

Direct identification of on-bead peptides using surface-enhanced Raman spectroscopic barcoding system for high-throughput bioanalysis.

Sci. Rep. 5 , 10144, (2015)

Recently, preparation and screening of compound libraries remain one of the most challenging tasks in drug discovery, biomarker detection, and biomolecular profiling processes. So far, several distinc...

Modification of gold source and drain electrodes by self-assembled monolayer in staggered n-and p-channel organic thin film transistors. Boudinet D, et al.

Org. Electron. 11(2) , 227-237, (2010)

 4-MethoxythiophenolBioassay

View more

This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Apparent binding constant for purified human kidney TPMT
Source: ChEMBL
Target: Thiopurine S-methyltransferase
External Id: CHEMBL858390
Total 1, Current Page 1 of 1
1

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

4-methoxyphenylthiol
EINECS 211-799-2
p-methoxyphenyl mercaptan
MFCD00004849
BENZENETHIOL,p-METHOXY
4-Methoxythiophenol
4-Mercaptoanisole
para-Methoxybenzenethiol
p-Methoxybenzenethiol
S-p-methoxyphenylthiol
4-methoxybenzene-1-thiol
Benzenethiol, 4-methoxy- (9CI)
Benzenethiol,4-methoxy
4-Methoxy Thiophenol
4-Methoxybenzenethiol
4-methoxy-benzenethiol

 4-Methoxythiophenol | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the LogP of 4-methoxybenzenethiol?
A: LogP of 4-methoxybenzenethiol is 2.46.
Q: What English synonyms does 4-methoxybenzenethiol have?
A: English synonyms of 4-methoxybenzenethiol: 4-methoxyphenylthiol, EINECS 211-799-2, p-methoxyphenyl mercaptan, MFCD00004849, BENZENETHIOL,p-METHOXY, 4-Methoxythiophenol, 4-Mercaptoanisole, para-Methoxybenzenethiol, p-Methoxybenzenethiol, S-p-methoxyphenylthiol, 4-methoxybenzene-1-thiol, Benzenethiol, 4-methoxy- (9CI), Benzenethiol,4-methoxy, 4-Methoxy Thiophenol, 4-Methoxybenzenethiol, 4-methoxy-benzenethiol.
Q: What is the safety information for 4-methoxybenzenethiol?
A: Safety information for 4-methoxybenzenethiol: S26-S36/37-S37/39.
Q: What are the upstream materials of 4-methoxybenzenethiol?
A: Related upstream materials(CAS) of 4-methoxybenzenethiol: 98-68-0;696-62-8;5335-87-5;243671-60-5;26905-24-8;1879-16-9;13511-98-3;100-66-3.
Q: What is the InChIKey of 4-methoxybenzenethiol?
A: InChIKey of 4-methoxybenzenethiol is NIFAOMSJMGEFTQ-UHFFFAOYSA-N.
Q: What is the molecular formula of 4-methoxybenzenethiol?
A: Molecular formula of 4-methoxybenzenethiol is C7H8OS.
Q: What is the CAS number of 4-methoxybenzenethiol?
A: CAS number of 4-methoxybenzenethiol is 696-63-9.
Q: What are the downstream products of 4-methoxybenzenethiol?
A: Related downstream products(CAS) of 4-methoxybenzenethiol: 111424-46-5;3393-77-9;139-66-2;5633-57-8;108-98-5;5397-34-2;5335-87-5;108-80-5;1153-43-1.
Q: What is the boiling point of 4-methoxybenzenethiol?
A: Boiling point of 4-methoxybenzenethiol is 224.9±13.0 °C at 760 mmHg.
Q: What is the molecular weight of 4-methoxybenzenethiol?
A: Molecular weight of 4-methoxybenzenethiol is 140.203.

 4-Methoxythiophenolfactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
Zhongshan Xingrui Chemical Co. , Ltd.
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