Pyridostigmine Bromide

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

MedKoo CAT#: 318595

CAS#: 101-26-8

Description: Pyridostigmine Bromide is a cholinesterase inhibitor with a slightly longer duration of action than neostigmine. It is used in the treatment of myasthenia gravis and to reverse the actions of muscle relaxants.Pyridostigmine bromide binds reversibly to acetylcholinesterase active sites in the peripheral nervous system, thereby preventing the breakdown of acetylcholine. This leads to an accumulation of acetylcholine at cholinergic synapses and facilitates transmission of impulses across the neuromuscular junction.

Chemical Structure

Pyridostigmine Bromide
CAS# 101-26-8

Theoretical Analysis

MedKoo Cat#: 318595
Name: Pyridostigmine Bromide
CAS#: 101-26-8
Chemical Formula: C9H13BrN2O2
Exact Mass:
Molecular Weight: 261.12
Elemental Analysis: C, 41.40; H, 5.02; Br, 30.60; N, 10.73; O, 12.25

Price and Availability

Size Price Availability Quantity
1.0g USD 150.0 2 Weeks
2.0g USD 250.0 2 Weeks
5.0g USD 450.0 2 Weeks
10.0g USD 650.0 2 Weeks
20.0g USD 950.0 2 Weeks
50.0g USD 1650.0 2 Weeks
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Synonym: Pyridostigmine Bromide; Mestinon; Regonol; Kalimin; Pyridostigmine Bromide; Bromide, Pyridostigmine; Mestinon;

IUPAC/Chemical Name: (1-methylpyridin-1-ium-3-yl) N,N-dimethylcarbamate;bromide


InChi Code: InChI=1S/C9H13N2O2.BrH/c1-10(2)9(12)13-8-5-4-6-11(3)7-8;/h4-7H,1-3H3;1H/q+1;/p-1

SMILES Code: C[N+]1=CC=CC(=C1)OC(=O)N(C)C.[Br-]

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, not in water

Shelf Life: >2 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: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 261.12 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

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*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

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