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Aromatic building blocks

(S)-Cyclopentolate

Also known as 2-(dimethylamino)ethyl (2S)-2-(1-hydroxycyclopentyl)-2-phenylacetate, Cyclopentolate, (S)-, 2-(dimethylamino)ethyl (2S)-(1-hydroxycyclopentyl)(phenyl)ethanoate

CAS 204990-63-6Formula C17H25NO3Molar mass 291.39 g/mol
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(S)-Cyclopentolate chemical structure, C17H25NO3, CAS 204990-63-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
204990-63-6
Formula
C17H25NO3
Molar mass
291.39 g/mol
HS code
292219
Category
Aromatic building blocks

What is (S)-Cyclopentolate?

Plain description, key identifiers and synonyms

(S)-cyclopentolate is the (S)-enantiomer of cyclopentolate. It is an enantiomer of a (R)-cyclopentolate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-(dimethylamino)ethyl (2S)-2-(1-hydroxycyclopentyl)-2-phenylacetate
CAS number
204990-63-6
Molecular formula
C17H25NO3
UNII
6P3623Y54G
MDL number
MFCD30183305
InChIKey
SKYSRIRYMSLOIN-OAHLLOKOSA-N
InChI
InChI=1S/C17H25NO3/c1-18(2)12-13-21-16(19)15(14-8-4-3-5-9-14)17(20)10-6-7-11-17/h3-5,8-9,15,20H,6-7,10-13H2,1-2H3/t15-/m1/s1
Canonical SMILES
CN(C)CCOC(=O)C(c1ccccc1)C1(O)CCCC1
Isomeric SMILES
CN(C)CCOC(=O)[C@@H](C1=CC=CC=C1)C2(CCCC2)O

Synonyms

  • 2-(dimethylamino)ethyl (2S)-2-(1-hydroxycyclopentyl)-2-phenylacetate
  • Cyclopentolate, (S)-
  • 2-(dimethylamino)ethyl (2S)-(1-hydroxycyclopentyl)(phenyl)ethanoate
  • 2-(dimethylamino)ethyl (2S)-2-(1-hydroxycyclopentyl)-2-phenyl-acetate
  • Benzeneacetic acid, a-(1-hydroxycyclopentyl)-, 2-(dimethylamino)ethylester
  • Benzeneacetic acid, alpha-(1-hydroxycyclopentyl)-, 2-(dimethylamino)ethyl ester, (alphaS)-
  • Benzeneacetic acid, alpha-(1-hydroxycyclopentyl)-, 2-(dimethylamino)ethyl ester, (.alpha.s)-

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
291.39 g/molcalc.
Exact mass
291.1834 Dacalc.
LogP (octanol/water)
2.18calc.
Topological polar surface area
49.77 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
6calc.
Heavy atoms
21calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.59calc.
Formal charge
0calc.
Stereocentres
1calc.
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, c1ccc(CC2CCCC2)cc1

c1ccc(CC2CCCC2)cc1

2 rings, 12 atoms, the Benzene, (cyclopentylmethyl)- ring system.

468 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.

(S)-Cyclopentolate suppliers

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(S)-Cyclopentolate price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

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 (S)-Cyclopentolate is traded under.

HS 2922.19Indicative HS code

Amino-alcohols, other than those containing more than one kind of oxygen function, their…

World exports in 2024
$2.2B
−4.7% vs 2023, imports $2.27B
2019 to 2024
Top exporters
  1. China21.7%
  2. Germany17.3%
  3. United States15.6%
Top importers
  1. India * partner reported11.0%
  2. United States9.0%
  3. Germany7.2%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about (S)-Cyclopentolate, based on the data on this page

What is (S)-Cyclopentolate?

(S)-cyclopentolate is the (S)-enantiomer of cyclopentolate. It is an enantiomer of a (R)-cyclopentolate.

What is the CAS number of (S)-Cyclopentolate?

The CAS registry number of (S)-Cyclopentolate is 204990-63-6.

What is the molecular formula and weight of (S)-Cyclopentolate?

The molecular formula of (S)-Cyclopentolate is C17H25NO3 and its molar mass is 291.39 g/mol.

What is (S)-Cyclopentolate used for?

Known uses and roles of (S)-Cyclopentolate include building blocks in research and laboratory and screening compounds in research and laboratory.

Is (S)-Cyclopentolate hazardous?

No GHS hazard classification for (S)-Cyclopentolate 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 (S)-Cyclopentolate?

(S)-Cyclopentolate is usually classified under HS code 292219 (Amino-alcohols, other than those containing more than one kind of oxygen function, their…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy (S)-Cyclopentolate?

Post a free request on CompoundList and suppliers of (S)-Cyclopentolate will send you quotes. Your contact details stay private until you accept a quote.

What is the price of (S)-Cyclopentolate?

Suppliers quote (S)-Cyclopentolate 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 (S)-Cyclopentolate

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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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