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SML0277

Methylnaltrexone bromide

≥97% (HPLC), narcotic antagonist, powder

Synonym(s):

17-(Cyclopropylmethyl)-4,5α-epoxy-3,14-dihydroxy-17-methyl-6-oxomorphinanium bromide, MNTX, Methylnaltrexonium, Mrz-2663, N-Methylnaltrexone, Naltrexone MB, Quaternary ammonium naltrexone

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About This Item

Empirical Formula (Hill Notation):
C21H26NO4 · Br
CAS Number:
73232-52-7
Molecular Weight:
436.34
UNSPSC Code:
12352200
PubChem Substance ID:
329825285
NACRES:
NA.77
MDL number:
MFCD06407831
Assay:
≥97% (HPLC)
Form:
powder
Storage condition:
desiccated
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Product Name

Methylnaltrexone bromide, ≥97% (HPLC)

assay

≥97% (HPLC)

form

powder

storage condition

desiccated

color

white to beige

solubility

H2O: ≥5 mg/mL

shipped in

wet ice

storage temp.

−20°C

SMILES string

[Br-].C[N@+]1(CC[C@]23[C@H]4Oc5c(O)ccc(C[C@@H]1[C@]2(O)CCC4=O)c35)CC6CC6

InChI

1S/C21H25NO4.BrH/c1-22(11-12-2-3-12)9-8-20-17-13-4-5-14(23)18(17)26-19(20)15(24)6-7-21(20,25)16(22)10-13;/h4-5,12,16,19,25H,2-3,6-11H2,1H3;1H/t16-,19+,20+,21-,22?;/m1./s1

InChI key

IFGIYSGOEZJNBE-KNLJMPJLSA-N

Gene Information

human ... OPRM1(4988)

General description

Methylnaltrexone does not cross blood brain barrier and does not affect the opioid effects in the brain, such as analgesia. It is used to treat opioid-induced constipation (OIC).

Application

Methylnaltrexone bromide has been used as a drug to measure plasma protein binding (PPB), permeability (Pm) and the membrane coefficient (KIAM) for the prediction of blood brain barrier (BBB) penetration. It is also used as a mu-opioid receptor (MOR) antagonist to abrogate morphine tolerance and opioid-induced hyperalgesia (OIH).

Biochem/physiol Actions

Methylnaltrexone bromide is a narcotic antagonist.
Methylnaltrexone bromide is a narcotic antagonist. It is a peripheral mu-opiod receptor antagonist that cannot cross the blood-brain barrier. It reverses many opioid side-effects without interfering with pain relief.

Features and Benefits

This compound is featured on the Opioid Receptors page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

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pictograms

Health hazard
GHS08

signalword

Warning

hcodes

H371

Hazard Classifications

STOT SE 2 Oral

target_organs

Gastrointestinal tract

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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