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Sulfur and phosphorus compounds

Cyclopentanethiol

Also known as Cyclopentyl mercaptan, Mercaptocyclopentane, Cyclopentylthiol

CAS 1679-07-8Formula C5H10SMolar mass 102.20 g/molEC 216-841-3
GHS signal word: Warning. Pictograms: Flammable 2 suppliers listed
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Cyclopentanethiol chemical structure, C5H10S, CAS 1679-07-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1679-07-8
Formula
C5H10S
Molar mass
102.20 g/mol
Physical form
Liquid
HS code
293090
Category
Sulfur and phosphorus compounds
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Cyclopentanethiol?

Plain description, key identifiers and synonyms

Cyclopentanethiol is an alkanethiol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
cyclopentanethiol
CAS number
1679-07-8 CAS number cross-checked
EC number
216-841-3
Molecular formula
C5H10S
UNII
H279996YO9
MDL number
MFCD00001369
InChIKey
WVDYBOADDMMFIY-UHFFFAOYSA-N
InChI
InChI=1S/C5H10S/c6-5-3-1-2-4-5/h5-6H,1-4H2
SMILES (canonical and isomeric)
C1CCC(C1)S

Synonyms

  • Cyclopentyl mercaptan
  • Mercaptocyclopentane
  • Cyclopentylthiol
  • 4-06-00-00015 (Beilstein Handbook Reference)
  • cyclopentyl thiol
  • cyclopen-tanethiol
  • cyclopentane thiol
  • cyclopentylmercaptan
  • Cyclopentanethiol, 97%
  • Cyclopentanethiol, >=97%, FG

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Liquidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
102.20 g/molcalc.
Exact mass
102.0503 Dacalc.
LogP (octanol/water)
1.86calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1CCCC1

C1CCCC1

1 ring, 5 atoms, the Cyclopentane ring system.

10,985 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS02: Flammable
Flammable

Hazard statements

  • H226Flammable liquid and vapour.
Precautionary statements (11)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Cyclopentanethiol suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 2 suppliers

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Where suppliers are based

2 suppliers in 2 countries

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Cyclopentanethiol price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Functional uses

  • Flavouring and nutrient

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Inactive in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Cyclopentanethiol is traded under.

HS 2930.90Indicative HS code

Organo-sulphur compounds, other

World exports in 2024
$5.83B
+0.1% vs 2023, imports $5.93B
2019 to 2024
Top exporters
  1. China40.7%
  2. United States10.9%
  3. Japan9.3%
Top importers
  1. United States13.3%
  2. Brazil12.6%
  3. China6.6%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Cyclopentanethiol is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Cyclopentanethiol, based on the data on this page

What is Cyclopentanethiol?

Cyclopentanethiol is an alkanethiol.

What is the CAS number of Cyclopentanethiol?

The CAS registry number of Cyclopentanethiol is 1679-07-8.

What is the molecular formula and weight of Cyclopentanethiol?

The molecular formula of Cyclopentanethiol is C5H10S and its molar mass is 102.20 g/mol.

What is Cyclopentanethiol used for?

Known uses and roles of Cyclopentanethiol include building blocks in research and laboratory, screening compounds in research and laboratory and flavouring and nutrient.

Is Cyclopentanethiol hazardous?

Cyclopentanethiol carries the GHS signal word "Warning". Main hazards: flammable liquid and vapour. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Cyclopentanethiol?

Cyclopentanethiol is usually classified under HS code 293090 (Organo-sulphur compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cyclopentanethiol?

CompoundList lists 2 suppliers of Cyclopentanethiol in United Kingdom and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Cyclopentanethiol?

Suppliers quote Cyclopentanethiol on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Cyclopentanethiol

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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