Oxybutynin hydrochloride

Also known as: Oxybutynin chloride, Oxybutynin HCl, 4-(Diethylamino)-2-butyn-1-yl cyclohexyl(hydroxy)phenylacetate hydrochloride (1:1), 4-Diethylamino-2-butynyl Phenylcyclohexylglycolate Hydrochloride, α-Phenylcyclohexaneglycolic acid 4-(diethylamino)-2-butynyl ester hydrochloride, Benzeneacetic acid, α-cyclohexyl-α-hydroxy-, 4-(diethylamino)-2-butyn-1-yl ester, hydrochloride (1:1), 4-(Diethylamino)but-2-yn-1-yl cyclohexyl(hydroxy)phenylacetate hydrochloride, Cyclohexaneglycolic acid, α-phenyl-, 4-(diethylamino)-2-butynyl ester, hydrochloride

Oxybutynin hydrochloride (CAS 1508-65-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C22H32ClNO3 and a molecular weight of 393.947 g/mol. Key properties include a melting point of 126-128ºC and a boiling point of 494.4ºC at 760 mmHg. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1508-65-2
Jingsj CID: J-1962908-4
Molecular Formula: C₂₂H₃₂ClNO₃
Molecular Weight: 393.947 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	126-128ºC
Boiling Point	494.4ºC at 760 mmHg
Exact Mass	393.207062
PSA	49.77000
LogP	4.14490
Vapor Pressure	1.37E-10mmHg at 25°C
Storage Conditions	Room temp

GHS Safety & Compliance

IrritantSignal word: Warning

H302 — Harmful if swallowed

Activity & Biological Data

Additional Information	[1]. Tupker, R.A., A.M. Harmsze, and V.H. Deneer, Oxybutynin therapy for generalized hyperhidrosis. Archives of dermatology, 2006. 142(8): p. 1065-1086. [2]. Mijnhout, G., et al., Oxybutynin: dry days for patients with hyperhidrosis. Neth J Med, 2006. 64(9): p. 326-8. [3]. Schollhammer, M. and L. Misery, Treatment of hyperhidrosis with oxybutynin. Archives of dermatology, 2007. 143(4): p. 543-551.

Additional Information

[1]. Tupker, R.A., A.M. Harmsze, and V.H. Deneer, Oxybutynin therapy for generalized hyperhidrosis. Archives of dermatology, 2006. 142(8): p. 1065-1086. [2]. Mijnhout, G., et al., Oxybutynin: dry days for patients with hyperhidrosis. Neth J Med, 2006. 64(9): p. 326-8. [3]. Schollhammer, M. and L. Misery, Treatment of hyperhidrosis with oxybutynin. Archives of dermatology, 2007. 143(4): p. 543-551.

Customs & Trade Information

HS Code	2922509090
Summary	2922509090. other amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Oxybutynin hydrochloride?

The CAS number of Oxybutynin hydrochloride is 1508-65-2.

What are the molecular formula and molecular weight of Oxybutynin hydrochloride?

Oxybutynin hydrochloride has molecular formula C22H32ClNO3 and molecular weight 393.947 g/mol.

Is Oxybutynin hydrochloride hazardous?

Oxybutynin hydrochloride has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of Oxybutynin hydrochloride?

For Oxybutynin hydrochloride, Downstream Products: Oxybutynin, 4-(Diethylamino)but-2-yn-1-ol, 2-Cyclohexylmandelic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Oxybutynin hydrochloride (CAS 1508-65-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1962908-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.