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

MedKoo CAT#: 571333

CAS#: 61-33-6

Description: Benzylpenicillin is a penicillin derivative commonly used in the form of its sodium or potassium salts in the treatment of a variety of infections. It is effective against most gram-positive bacteria and against gram-negative cocci. It has also been used as an experimental convulsant because of its actions on gamma-aminobutyric acid mediated synaptic transmission.

Price and Availability




Benzylpenicillin is not in stock, may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 571333
Name: Benzylpenicillin
CAS#: 61-33-6
Chemical Formula: C16H18N2O4S
Exact Mass: 334.0987
Molecular Weight: 334.4
Elemental Analysis: C, 57.47; H, 5.43; N, 8.38; O, 19.14; S, 9.59

Synonym: Benzylpenicillin; Galofak; Cilopen; Pradupen

IUPAC/Chemical Name: (2S,5R,6R)-3,3-Dimethyl-7-oxo-6-(2-phenylacetamido)-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid


InChi Code: InChI=1S/C16H18N2O4S/c1-16(2)12(15(21)22)18-13(20)11(14(18)23-16)17-10(19)8-9-6-4-3-5-7-9/h3-7,11-12,14H,8H2,1-2H3,(H,17,19)(H,21,22)/t11-,12+,14-/m1/s1

SMILES Code: O=C([C@@H](C(C)(C)S[C@]1([H])[C@@H]2NC(CC3=CC=CC=C3)=O)N1C2=O)O

Technical Data

Solid powder

>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).

Soluble in DMSO

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).

Harmonized System Code:


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