CompoundList
Sign in
Paraffins, waxes and cycloalkanes

Spiropentane

Also known as Spiro[2.2]pentane, spiro(2.2)pentane

CAS 157-40-4Formula C5H8Molar mass 68.12 g/mol
Get quotes Safety data
Spiropentane chemical structure, C5H8, CAS 157-40-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
157-40-4
Formula
C5H8
Molar mass
68.12 g/mol
HS code
290219
Category
Paraffins, waxes and cycloalkanes

What is Spiropentane?

Plain description, key identifiers and synonyms

Spiropentane is a chemical substance with the molecular formula C5H8 and a molar mass of 68.12 g/mol. Its CAS registry number is 157-40-4. The IUPAC name is spiro[2.2]pentane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
spiro[2.2]pentane
CAS number
157-40-4 CAS number cross-checked
Molecular formula
C5H8
InChIKey
OGNAOIGAPPSUMG-UHFFFAOYSA-N
InChI
InChI=1S/C5H8/c1-2-5(1)3-4-5/h1-4H2
SMILES (canonical and isomeric)
C1CC12CC2

Synonyms

  • Spiro[2.2]pentane
  • spiro(2.2)pentane

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
68.12 g/molcalc.
Exact mass
68.0626 Dacalc.
LogP (octanol/water)
1.56calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
2calc.
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, C1CC12CC2

C1CC12CC2

2 rings, 5 atoms. This chemical is the scaffold itself.

216 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Spiropentane suppliers

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

No supplier listings yet

Post one free request and suppliers who make or trade Spiropentane can send you quotes. Your contact details stay private until you accept a quote.

Request quotesSell this chemical

Spiropentane 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.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2902.19Indicative HS code

Cyclanes, cyclenes and cycloterpenes, other

World exports in 2024
$979M
+24.3% vs 2023, imports $1B
2019 to 2024
Top exporters
  1. China23.4%
  2. United States20.6%
  3. Germany13.6%
Top importers
  1. India * partner reported9.9%
  2. United States9.8%
  3. South Korea9.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Spiropentane?

Spiropentane is a chemical substance with the molecular formula C5H8 and a molar mass of 68.12 g/mol. Its CAS registry number is 157-40-4. The IUPAC name is spiro[2.2]pentane.

What is the CAS number of Spiropentane?

The CAS registry number of Spiropentane is 157-40-4.

What is the molecular formula and weight of Spiropentane?

The molecular formula of Spiropentane is C5H8 and its molar mass is 68.12 g/mol.

Is Spiropentane hazardous?

No GHS hazard classification for Spiropentane is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Spiropentane?

Spiropentane is usually classified under HS code 290219 (Cyclanes, cyclenes and cycloterpenes, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Spiropentane?

Post a free request on CompoundList and suppliers of Spiropentane will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Spiropentane?

Suppliers quote Spiropentane 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 Spiropentane

Get quotes for Spiropentane

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Spiropentane
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Spiropentane with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/spiropentane-157-40-4" title="Spiropentane structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Paraffins, waxes and cycloalkanes or HS code 290219

Price on request
Free quotes, contact stays private
Get quotes