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Antagonist

An antagonist blocks the action of an agonist. When bound to a receptor it produces a conformational change that causes the cell to maintain neutral signal transduction activity, whether or not an agonist is present.

A.G. Scientific delivers quality assured biochemicals directly to scientists, from small-scale to bulk orders. Our leadership in bulk supply allows us to provide custom product packaging and create multiple product forms. We offer “just in time” delivery, private labeling, and custom formulations for specific research needs.

42 Item(s) Show per page
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1-Benzyl-APDC.HCL
Product Number: B-1067

Product Name Price Qty
1-Benzyl-APDC.HCL - 1x1 mg
$30.00
1-Benzyl-APDC.HCL - 1x5 mg
$120.00
mGluR6-selective ligand. Learn More

2-Hydroxysaclofen
Product Number: H-1114

Product Name Price Qty
2-Hydroxysaclofen - 1x10 mg
$185.00
2-Hydroxysaclofen - 1x50 mg
$815.00
Selective antagonist of GABAB receptors, which demonstrates a higher selectivity than phaclofen. Learn More

AIDA, UPF-523
Product Number: A-1012

Product Name Price Qty
AIDA, UPF-523 - 1x5 mg
$35.00
AIDA, UPF-523 - 1x25 mg
$140.00
A potent and selective ligand for mGluR1 metabotropic receptor subtypes. Learn More

Aminopterin
Product Number: A-1294

Product Name Price Qty
Aminopterin - 1x10 mg
$20.00
Aminopterin - 1x50 mg
$80.00
Folic acid antagonist. Potent dihydrofolate reductase inhibitor. Learn More

BQ-123.Sodium Salt
Product Number: E-1032

Product Name Price Qty
BQ-123.Sodium Salt - 1x1 mg
$95.00
BQ-123.Sodium Salt - 1x5 mg
$375.00
A highly potent and selective ETA-receptor antagonist. Learn More

BQ-788.Sodium Salt
Product Number: E-1034

Product Name Price Qty
BQ-788.Sodium Salt - 1x500 μg
$130.00
BQ-788.Sodium Salt - 1x1 mg
$185.00
A highly potent and selective ETB-receptor antagonist. Learn More

Capsazepine
Product Number: C-1035

Product Name Price Qty
Capsazepine - 1x25 mg
$275.00
Analog of capsaicin that acts as a specific capsaicin antagonist. Learn More

Clobenpropit.Dihydrobromide, VUF 9153
Product Number: C-1015

Product Name Price Qty
Clobenpropit.Dihydrobromide, VUF 9153 - 1x10 mg
$170.00
Clobenpropit.Dihydrobromide, VUF 9153 - 1x50 mg
$745.00
Extremely potent and selective Histamine H3 antagonist. Effective as an anticonvulsant. Learn More

CNQX
Product Number: C-1053

Product Name Price Qty
CNQX - 1x10 mg
$70.00
CNQX - 1x25 mg
$155.00
Potent kainate / quisqualate receptor antagonist. Learn More

Cochlioquinone A, Bipolaris leersia
Product Number: C-1401

Product Name Price Qty
Cochlioquinone A, Bipolaris leersia - 1x0.50 mg
$180.00
Cochlioquinone A, Bipolaris leersia - 1x2.50 mg
$615.00
Cochlioquinone A is the major component of a bioactive pigment isolated from Bipolaris leersia. It has beenfound to be an antagonist of th Learn More

Cochlioquinone B, Bipolaris leersia
Product Number: C-1403

Product Name Price Qty
Cochlioquinone B, Bipolaris leersia - 1x0.50 mg
$180.00
Cochlioquinone B, Bipolaris leersia - 1x2.50 mg
$615.00
Cochlioquinone B, the minor component of a bioactive pigment isolated from Bipolaris leersia, is an NADHubiquinonereductase inhibitor and Learn More

D-AP3
Product Number: A-1044

Product Name Price Qty
D-AP3 - 1x5 mg
$75.00
Glutamate receptors Learn More

D-AP4
Product Number: A-1038

Product Name Price Qty
D-AP4 - 1x5 mg
$90.00
Broad spectrum excitatory amino acid receptor antagonist. Inquiry for for bulk pricing. Learn More

D-AP5
Product Number: A-1059

Product Name Price Qty
D-AP5 - 1x5 mg
$78.00
D-AP5 - 1x25 mg
$258.00
Potent and selective antagonist for NMDA receptors. Active enantiomer. Learn More

D-AP7
Product Number: A-1050

Product Name Price Qty
D-AP7 - 1x5 mg
$75.00
Anticonvulsant. More active form of AP7. Learn More

DL-AP3
Product Number: A-1045

Product Name Price Qty
DL-AP3 - 1x50 mg
$40.00
NMDA receptor antagonist. Learn More

DL-AP5
Product Number: A-1061

Product Name Price Qty
DL-AP5 - 1x5 mg
$60.00
DL-AP5 - 1x25 mg
$240.00
Potent NMDA receptor antagonist. Learn More

DL-AP6
Product Number: A-1057

Product Name Price Qty
DL-AP6 - 1x5mg
$50.00
Weak NMDA receptor antagonist. Learn More

DL-AP7
Product Number: A-1051

Product Name Price Qty
DL-AP7 - 1x5 mg
$30.00
Potent NMDA receptor antagonist. Anticonvulsant. Learn More

DNQX
Product Number: D-1017

Product Name Price Qty
DNQX - 1x10 mg
$50.00
DNQX - 1x50 mg
$200.00
Potent kainate/quisqualate receptor antagonist. Learn More

Isovelleral
Product Number: I-1034

Product Name Price Qty
Isovelleral - 1x1 mg
$45.00
Isovelleral - 1x5 mg
$175.00
Antagonist with various binding profiles towards vanilloid receptors. Learn More

JNJ 16259685
Product Number: J-1100

Product Name Price Qty
JNJ 16259685 - 1x5 mg
$80.00
JNJ 16259685 - 1x25 mg
$315.00
Potent, non-competitive mGluR1 antagonist (Ki=-0.34nM). Inhibits glutamate-induced Ca2+ response at the human mGluR1 (IC50=0.55nM). Selecti Learn More

Ketanserin Tartrate
Product Number: K-1044

Product Name Price Qty
Ketanserin Tartrate - 1x50 mg
$90.00
Selective 5-HT2 & 5-HT1C serotonin receptor antagonist. Learn More

L-AP3
Product Number: A-1046

Product Name Price Qty
L-AP3 - 1x5 mg
$55.00
L-AP3 - 1x25 mg
$218.00
Glutamate receptor antagonist. Learn More

LY-171833
Product Number: L-1049

Product Name Price Qty
LY-171833 - 1x10 mg
$68.00
LY-171833 - 1x50 mg
$260.00
Competitive leukotriene D4 antagonist. Has also been shown to bind to the γ-isoform of the peroxisome proliferator activator receptor (PPAR Learn More

MDL-105212.HCl
Product Number: M-1092

Product Name Price Qty
MDL-105212.HCl - 1x1mg
$63.00
MDL-105212.HCl - 1x5 mg
$252.00
Non-peptide tachykinin antagonist with strong affinity for NK1 and NK2 receptors. Learn More

Memantine.Hydrochloride
Product Number: M-1024

Product Name Price Qty
Memantine.Hydrochloride - 1x10 mg
$20.00
Memantine.Hydrochloride - 1x50 mg
$60.00
Low-affinity NMDA receptor antagonist. Stimulates dopamine release. ** Inquire for current availability from stock ** Learn More

MK-571.Na
Product Number: M-1177

Product Name Price Qty
MK-571.Na - 1x5 mg
$55.00
MK-571.Na - 1x25 mg
$230.00
Leukotriene LTD4 receptor antagonist, that potently inhibits MRP1, has been shown to overcome acquired arsenic tolerance. Learn More

NBQX
Product Number: N-1019

Product Name Price Qty
NBQX - 1x5 mg
$62.00
NBQX - 1x25 mg
$255.00
Potent and selective AMPA/Kainate receptor antagonist. Neuroprotective agent. For water soluble product, refer to product N1020 Learn More

NBQX.diSodium Salt
Product Number: N-1020

Product Name Price Qty
NBQX.diSodium Salt - 1x5mg
$90.00
NBQX.diSodium Salt - 1x25mg
$360.00
Potent and selective AMPA/Kainate receptor antagonist. Neuroprotective and anticonvulsant agent in vivo.. Water soluble form. Learn More

Nimodipine
Product Number: N-1073

Product Name Price Qty
Nimodipine - 1x250 mg
$80.00
Nimodipine - 1x1 g
$190.00
L-type Ca2+ channel agonist. Vasodilator. Learn More

nor-Binaltorphimine.Dihydrochloride
Product Number: B-1027

Product Name Price Qty
nor-Binaltorphimine.Dihydrochloride - 1x1 mg
$25.00
κ-opioid receptor antagonist. Learn More

PCCG-13
Product Number: P-1085

Product Name Price Qty
PCCG-13 - 1x1 mg
$95.00
Potent and selective antagonist of mGluR mediated PLD response. Learn More

PCCG-4
Product Number: P-1067

Product Name Price Qty
PCCG-4 - 1x1 mg
$90.00
PCCG-4 - 1x5 mg
$360.00
Selective mGluR antagonist. Learn More

Phenoxybenzamine.HCl
Product Number: P-1235

Product Name Price Qty
Phenoxybenzamine.HCl - 1x100 mg
$30.00
Inhibitor of calmodulin. Selective blocker of α-adrenergic. Learn More

PK-11195
Product Number: P-1013

Product Name Price Qty
PK-11195 - 1x5 mg
$52.00
PK-11195 - 1x50 mg
$160.00
PK-11195 - 1x25 mg
$210.00
Benzodiazepine antagonist. Learn More

Resiniferatoxin,Euphorbia poisonii, High Purity
Product Number: R-1094

Product Name Price Qty
Resiniferatoxin,Euphorbia poisonii, High Purity - 1x1 mg
$110.00
Resiniferatoxin,Euphorbia poisonii, High Purity - 1x5 mg
$413.00
RTX vanilloid receptor antagonist. Potent capsaicin analog. Learn More

Saclofen
Product Number: S-1028

Product Name Price Qty
Saclofen - 1x10 mg
$165.00
Selective GABAB receptor antagonist. Learn More

W-7.Hydrochloride
Product Number: W-1040

Product Name Price Qty
W-7.Hydrochloride - 1x50 mg
$82.00
A cell permeable calmodulin antagonist that inhibits myosin light chain kinase (IC₅₀ = 51 µM) and Ca²⁺-calmodulin-dependent phosphod Learn More

Withaferin A, Isolated from Whithania somnifera
Product Number: W-1042

Product Name Price Qty
Withaferin A, Isolated from Whithania somnifera - 1x10 mg
$75.00
Cell permeable and potent angiogenesis inhibitor from the family of withanolides. Inhibits endothelial cells (HUVEC) sprouting in vitro (IC5 Learn More

XE-CCG-I
Product Number: X-1001

Product Name Price Qty
XE-CCG-I - 1x1 mg
$110.00
Selective and highly active group II mGluR antagonist with a subtype specificity towards the mGlu3 receptor. No activity towards group I and Learn More

Xestospongin C
Product Number: X-1009

Product Name Price Qty
Xestospongin C - 1x100 μg
$650.00
A reversible and membrane-permeable blocker of IP3-mediated Ca2+ release. It does not interact with the IP3-binding site. Also reported to b Learn More

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