WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 564257

CAS#: 200398-40-9

Description: S18327 is a potential antipsychotic displaying marked antagonist properties at α1- and α2-adrenergic receptors.

Chemical Structure

CAS# 200398-40-9

Theoretical Analysis

MedKoo Cat#: 564257
Name: S18327
CAS#: 200398-40-9
Chemical Formula: C23H25FN4O2
Exact Mass: 408.20
Molecular Weight: 408.480
Elemental Analysis: C, 67.63; H, 6.17; F, 4.65; N, 13.72; O, 7.83

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales @medkoo.com or click below button.
Note: Price will be listed if it is available in the future.

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Synonym: S-18327; S 18327; S18327

IUPAC/Chemical Name: 1-{2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)piperid-1-yl]ethyl}3-phenyl imidazolin-2-one


InChi Code: InChI=1S/C23H25FN4O2/c24-18-6-7-20-21(16-18)30-25-22(20)17-8-10-26(11-9-17)12-13-27-14-15-28(23(27)29)19-4-2-1-3-5-19/h1-7,16-17H,8-15H2


Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >3 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.03.00

More Info:

Biological target:
In vitro activity:
In vivo activity:

Preparing Stock Solutions

The following data is based on the product molecular weight 408.48 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
Formulation protocol:
In vitro protocol:
In vivo protocol:

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1: Parker TJ, Della Pasqua OE, Loizillon E, Chezaubernard C, Jochemsen R, Danhof M. Pharmacokinetic-pharmacodynamic modelling in the early development phase of anti-psychotics: a comparison of the effects of clozapine, S 16924 and S 18327 in the EEG model in rats. Br J Pharmacol. 2001 Jan;132(1):151-8. PubMed PMID: 11156572; PubMed Central PMCID: PMC1572549.

2: Millan MJ, Brocco M, Rivet JM, Audinot V, Newman-Tancredi A, Maiofiss L, Queriaux S, Despaux N, Peglion JL, Dekeyne A. S18327 (1-[2-[4-(6-fluoro-1, 2-benzisoxazol-3-yl)piperid-1-yl]ethyl]3-phenyl imidazolin-2-one), a novel, potential antipsychotic displaying marked antagonist properties at alpha(1)- and alpha(2)-adrenergic receptors: II. Functional profile and a multiparametric comparison with haloperidol, clozapine, and 11 other antipsychotic agents. J Pharmacol Exp Ther. 2000 Jan;292(1):54-66. PubMed PMID: 10604931.

3: Millan MJ, Gobert A, Newman-Tancredi A, Lejeune F, Cussac D, Rivet JM, Audinot V, Adhumeau A, Brocco M, Nicolas JP, Boutin JA, Despaux N, Peglion JL. S18327 (1-[2-[4-(6-fluoro-1, 2-benzisoxazol-3-yl)piperid-1-yl]ethyl]3-phenyl imidazolin-2-one), a novel, potential antipsychotic displaying marked antagonist properties at alpha(1)- and alpha(2)-adrenergic receptors: I. Receptorial, neurochemical, and electrophysiological profile. J Pharmacol Exp Ther. 2000 Jan;292(1):38-53. PubMed PMID: 10604930.

4: Dekeyne A, Iob L, Millan MJ. Generalization of clozapine as compared to other antipsychotic agents to a discriminative stimulus elicited by the serotonin (5-HT)2A antagonist, MDL100,907. Neuropharmacology. 2003 Apr;44(5):604-15. PubMed PMID: 12668046.