Oxytocin

Name: Oxytocin
Brand: GenDarwin Research
SKU: GD-OXT
Price: 59.00 USD
Availability: BackOrder

Cyclic Nonapeptide Neurohormone (Cys¹–Cys⁶ Disulfide; C-terminal Amide)

$59.00 $11.80 / mg On backorder — dispatches in 5–10 business days

Lyophilized powder HPLC purity 99.41% Research use only

Oxytocin is a cyclic nonapeptide (Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH₂) stabilised by a Cys1–Cys6 disulfide bridge and C-terminal amide. It acts as a potent agonist at the oxytocin receptor (OXTR), a Gq/11-coupled GPCR, triggering IP₃-mediated Ca²⁺ release, PKC phosphorylation, and MAPK cascade modulation. Widely employed as a reference ligand in receptor pharmacology assays, neuroendocrine stress-response modelling, and neuroplasticity investigations in hippocampal and amygdala in vitro preparations.

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PROPERTIES
Molecular Formula	C₄₃H₆₆N₁₂O₁₂S₂
Molecular Weight (g/mol)	1007.2
Monoisotopic Mass (Da)	1006.4365
Topological Polar Surface Area (Å²)	450
Complexity	1870
XLogP (octanol-water partition)	-2.6
Heavy Atom Count	69
H-Bond Donor Count	12
H-Bond Acceptor Count	15
Rotatable Bond Count	17
InChIKey	XNOPRXBHLZRZKH-DSZYJQQASA-N
PubChem CID	439302

All values above are taken from PubChem CID 439302 and can be checked against that record.

2D Structure

CHEMICAL IDENTIFIERS
CAS Number	50-56-6
PubChem CID	439302
IUPAC Name	(2S)-1-[(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-13-[(2S)-butan-2-yl]-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]-N-[(2S)-1-[(2-amino-2-oxoethyl)amino]-4-methyl-1-oxopentan-2-yl]pyrrolidine-2-carboxamide
InChIKey	`XNOPRXBHLZRZKH-DSZYJQQASA-N`
InChI	`InChI=1S/C43H66N12O12S2/c1-5-22(4)35-42(66)49-26(12-13-32(45)57)38(62)51-29(17-33(46)58)39(63)53-30(20-69-68-19-25(44)36(60)50-28(40(64)54-35)16-23-8-10-24(56)11-9-23)43(67)55-14-6-7-31(55)41(65)52-27(15-21(2)3)37(61)48-18-34(47)59/h8-11,21-22,25-31,35,56H,5-7,12-20,44H2,1-4H3,(H2,45,57)(H2,46,58)(H2,47,59)(H,48,61)(H,49,66)(H,50,60)(H,51,62)(H,52,65)(H,53,63)(H,54,64)/t22-,25-,26-,27-,28-,29-,30-,31-,35-/m0/s1`
SMILES	`CC[C@H](C)[C@H]1C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@@H](CSSC[C@@H](C(=O)N[C@H](C(=O)N1)CC2=CC=C(C=C2)O)N)C(=O)N3CCC[C@H]3C(=O)N[C@@H](CC(C)C)C(=O)NCC(=O)N)CC(=O)N)CCC(=O)N`

Identifiers retrieved from PubChem CID 439302.

HPLC purity report Sample lot

Oxytocin

Lot: P260730-LC503723
SKU: GD-OXT

99.41% main peak, area %

8.269 minMain peak retention

0.5888%All other peaks

0.5888%Largest single impurity

2Peaks integrated

Drawn from the integration table below. Each peak sits at its reported retention time and is scaled so its height and area match the report; the peak shape is modelled and the baseline is flat, so this represents the reported integration rather than the raw detector file. Only the peaks the report lists are drawn. The lighter trace is the same data at 50× vertical zoom, because the impurity peaks are a fraction of a percent of the main peak.

Integration table as reported

#	Ret. time	Height	Area	Area %
1	8.269	1134070	10279282	99.41
2	8.922	9158	60884	0.5888

Retention time in minutes. Height and area are the report’s own values and units. Method wording is normalised for units and spelling; every value is as reported.

Method as reported

Column	250 × 4.6 mm, ChromCore 120-C18-5 µm
Mobile phase A	0.1% TFA in water
Mobile phase B	0.1% TFA in acetonitrile
Flow rate	1.0 mL/min
Detection	220 nm
Injection volume	10 µL

Time	A	B
0.1min	80%	20%
25.0min	55%	45%
25.1min	0%	100%
30.0min	Stop

Identity verified against PubChem, not a measurement of this lot

CAS number: 50-56-6
Molecular formula: C₄₃H₆₆N₁₂O₁₂S₂
Molecular weight: 1007.2 g/mol
Monoisotopic mass: 1006.4365 Da
InChIKey: XNOPRXBHLZRZKH-DSZYJQQASA-N
PubChem CID: 439302

Sample lot. This is the report supplied with the sample of this compound. A production lot ships with its own report, published here in the same form and indexed by its own lot number.

Every analytical figure above is transcribed from the supplier’s report for lot P260730-LC503723. Identity is the PubChem record, which can be checked independently. Purity is the main peak’s share of integrated peak area at the detection wavelength, so it measures related impurities. Water, salts and counter-ions are not part of it. These are the supplier’s release documents, not independent third-party tests.

This product is sold exclusively for in vitro and laboratory research use. It has not been evaluated by the FDA. Not approved for diagnostic, therapeutic, or veterinary use.

Oxytocin

2D Structure

Integration table as reported

Method as reported

Identity verified against PubChem, not a measurement of this lot

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