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Cyclopentolate

CAS No.
512-15-2
Chemical Name:
Cyclopentolate
Synonyms
Cyplegin;Mydrilate;yclopentolate;Cyclopentylate;Cyclopentoiate;Cyclopentolate;DL-Cyclopentolate;β-Dimethylaminoethyl (1-hydroxycyclopentyl)phenylacetate;2-(Dimethylamino)ethyl (1-hydroxycyclopentyl)(phenyl)acetate;beta-(Dimethylamino)ethyl (1-hydroxycyclopentyl)phenylacetate
CBNumber:
CB9707085
Molecular Formula:
C17H25NO3
Molecular Weight:
291.39
MDL Number:
MFCD00599448
MOL File:
512-15-2.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 18:56:34

Cyclopentolate Properties

Boiling point 409.7±20.0 °C(Predicted)
Density 1.136±0.06 g/cm3(Predicted)
pka pKa 7.93(H2O ) (Uncertain)
FDA UNII I76F4SHP7J
ATC code S01FA04,S01FA54

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P280-P305+P351+P338
REACH Registrations Active

Cyclopentolate price More Price(29)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Biosynth FC61687 Cyclopentolate 512-15-2 0.1g $519.2 2026-06-04 Buy
Biosynth FC61687 Cyclopentolate 512-15-2 0.25g $973.5 2026-06-04 Buy
Biosynth FC61687 Cyclopentolate 512-15-2 0.5g $1622.5 2026-06-04 Buy
Biosynth FC61687 Cyclopentolate 512-15-2 1g $1947 2026-06-04 Buy
Biosynth FC61687 Cyclopentolate 512-15-2 2g $3245 2026-06-04 Buy
Product number Packaging Price Buy
FC61687 0.1g $519.2 Buy
FC61687 0.25g $973.5 Buy
FC61687 0.5g $1622.5 Buy
FC61687 1g $1947 Buy
FC61687 2g $3245 Buy

Cyclopentolate Chemical Properties, Uses, Production

Originator

Cyclogyl,Schieffelin,US,1953

Uses

Cyclopentolate is an effective mydriatic and cycloplegic that begins to act very quickly and has a relatively short duration. It is used also in ophthalmoscopy for causing pre-operational mydriasis.

Uses

thalidomide derivative for multiple myeloma and myelodysplastic syndromes

Uses

Cyclopentolate is a muscarinic antagonist. It is used in eye drops to dilate the eyes and prevent them from refocusing making the eyes more sensitive to light and may cause blurring.

Definition

ChEBI: A carboxylic ester resulting from the formal condensation of (1-hydroxycyclopentyl)(phenyl)acetic acid with N,N-dimethylethanolamine. A tertiary amine antimuscarinic with actions similar to atropine, it is used as its ydrochloride salt to produce mydriasis (excessive dilation of the pupil) and cycloplegia (paralysis of the ciliary muscle of the eye) for opthalmic diagnostic procedures. It acts more quickly than atropine and has a shorter duration of action.

Manufacturing Process

To a well stirred suspension of 9 g of sodium phenyl acetate and 2.4 g of magnesium turnings in 25 cc of anhydrous ether, a solution of 9.4 cc of isopropyl bromide in 50 cc of anhydrous ether are added. The mixture is refluxed for one hour (during which time propane is evolved) and then 5 cc of cyclopentanone in 25 cc of anhydrous ether are added dropwise. The mixture is then refluxed for one hour and poured over ice water containing some hydrochloric acid. The ether solution is separated and extracted with 200 cc of 5% sodium hydroxide. The alkaline solution on acidification gives the free acid which is filtered off, dried in a desiccator and recrystallized from a mixture of ethylene dichloride and petroleum ether.
The product is 2-phenyl-2-(1-hydroxycyclopentyl)ethanoic acid, melting at 95° to 97°C. Of this product, 4.5 g in 30 cc of dry isopropyl alcohol are refluxed for 16 hours with 2.5 g of β-chloroethyl dimethyl amine. The solution is cooled and filtered clear from the solid by-product. The solvent is removed under reduced pressure on the steam bath and the residue is washed with anhydrous ether. It is dissolved in ethyl acetate from which it crystallizes. It is the hydrochloride of β-(dimethylamino)ethyl ester of 2-phenyl-2-(1- hydroxycyclopentyl) ethanoic acid, melting at 134° to 136°C.

brand name

Akpentolate (Akorn); Cyclogyl (Alcon); Pentolair (Bausch & Lomb); Pentolair (Pharmafair).

Therapeutic Function

Anticholinergic (ophthalmic)

Synthesis

Cyclopentolate, 2-(dimethylamino)ethylic ester of 1-hydroxycyclopentane- |á-phenylacetic acid (14.1.39), is synthesized by the esterification of |á-(1- droxycylopentyl) phenylacetic acid (14.1.38) using 2-dimethylaminoethylchloride, |á-(1- Hydroxycyclopentyl) phenylacetic acid (14.1.38) is synthesized by reacting the sodium salt of phenylacetic acid with cyclopentanone in the presence of isopropylmagnesium bromide [30].

Synthesis_512-15-2

Veterinary Drugs and Treatments

Cyclopentolate is an anticholinergic agent that induces relaxation of the sphincter of the iris and the ciliary muscles. When applied topically to the eyes, it causes a rapid, intense cycloplegic and mydriatic effect that is maximal in 15 – 60 minutes; recovery usually occurs within 24 hours. The cycloplegic and mydriatic effects are slower in onset and longer in duration in animal patients who have darkly pigmented irises. Cyclopentolate is used mainly to produce mydriasis and cycloplegia for diagnostic purposes.

Cyclopentolate Preparation Products And Raw materials

Cyclopentolate Suppliers

Global Suppliers ( 45)
Supplier Tel Email Country ProdList Advantage
Pure Chemistry Scientific Inc. 001-857-928-2050 or 1-888-588-9418 sales@chemreagents.com United States 10174 62
Syntechem Co.,Ltd info@syntechem.com China 12973 57
9ding chemical ( Shanghai) Limited 4009209199 sales@9dingchem.com China 18201 56
Shanghai Boyners Pharm-Tech Co., Ltd. 13817873692 mkt@boynerspharm.com China 1707 55
Amadis Chemical Company Limited 571-89925085 sales@amadischem.com China 131885 58
Aikon International Limited 025-66113011 19370895928 qzhang@aikonchem.com China 15390 58
Baoji Guokang Healthchem co.,ltd +8615604608665 15604608665 dominicguo@gk-bio.com CHINA 9389 58
Changzhou Kechem Bio-Scientific Co., LTD. 0519-68985668 13685222090 sales@kechem.cn China 26012 58
Energy Chemical 021-58432009 400-005-6266 marketing@energy-chemical.com China 44871 58
Pushan Industry (Shaanxi) Co., Ltd. 029-81310890 18165209495 2929288192@qq.com China 9949 58

View Latest Price from Cyclopentolate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
CYCLOPENTOLATE pictures 2021-11-02 CYCLOPENTOLATE
512-15-2
$158.70 1g 99% 500g Baoji Guokang Healthchem co.,ltd
1-Hydroxy-α-phenylcyclopentaneacetic acid, 2-(dimethylamino)ethyl ester Benzeneacetic acid, α-(1-hydroxycyclopentyl)-, 2-(dimethylamino)ethyl ester Cyclopentaneacetic acid, 1-hydroxy-α-phenyl-, 2-(dimethylamino)ethyl ester (6CI, 7CI, 8CI) DL-Cyclopentolate β-Dimethylaminoethyl (1-hydroxycyclopentyl)phenylacetate Cyplegin α-(1-Hydroxycyclopentyl)benzeneacetic acid 2-(dimethylamino)ethyl 2-(1-hydroxycyclopentyl)-2-phenyl-acetic acid 2-dimethylaminoethyl ester 2-dimethylaminoethyl 2-(1-hydroxycyclopentyl)-2-phenyl-ethanoate 1-Hydroxy-alpha-phenylcyclopentaneacetic acid, 2-(dimethylamino)ethyl ester 2-(Dimethylamino)ethyl (1-hydroxycyclopentyl)(phenyl)acetate 2-Dimethylaminoethyl 1-hydroxy-alpha-phenylcyclopentaneacetate Benzeneacetic acid, alpha-(1-hydroxycyclopentyl)-, 2-(dimethylamino)ethyl ester beta-(Dimethylamino)ethyl (1-hydroxycyclopentyl)phenylacetate Cyclopentylate Mydrilate yclopentolate 2-dimethylaminoethyl 2-(1-hydroxycyclopentyl)-2-phenylacetate Cyclopentoiate Benzeneacetic acid, a-(1-hydroxycyclopentyl)-, 2-(dimethylamino)ethylester Cyclopentolate 512-15-2