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API Impurities

Benzathine

Reference StandardAvailable on request

Order Benzathine (CAS 140-28-3) online at Zemixal: C16H20N2, COA and SDS with every lot, worldwide shipping. Quotes within one business day.

Pack sizes
Benzathine chemical structure
CAS number140-28-3
FormulaC16H20N2
Molar mass240.34 g/mol
Physical formSolid
HS code38229090
InChIKeyJUHORIMYRDESRB-UHFFFAOYSA-N
IUPAC nameN,N'-dibenzylethane-1,2-diamine

About Benzathine

Benzathine is supplied by Zemixal as a characterised reference material for Penicillin analysis. Key data (Reference Standard): CAS 140-28-3, formula C16H20N2 and molar mass 240.34 g/mol. It is handled as a solid.

Use cases we see most often

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Safe handling

Hazard communication follows GHS (Danger: H301, H302, H314 and H315). Our SDS lists exposure controls and first-aid measures.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Penicillin

See every impurity, metabolite and related compound we list for this API.

Penicillin standards

Typical uses

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Applications

Specifications and identifiers

Specifications of Benzathine
Product nameBenzathine
Catalogue numberZX-036692
CAS number140-28-3
IUPAC nameN,N'-dibenzylethane-1,2-diamine
Molecular formulaC16H20N2
Molar mass240.34 g/mol
Exact mass240.1626
GradeReference Standard
Physical formSolid
XLogP32.4
H-bond donors / acceptors2 / 2
Topological polar surface area24.1 Ų
HS code38229090
InChIKeyJUHORIMYRDESRB-UHFFFAOYSA-N
SMILESC1=CC=C(C=C1)CNCCNCC2=CC=CC=C2
PubChem CID8793
SynonymsN,N'-Dibenzylethylenediamine, Benzatin, 1,2-Bis(benzylamino)ethane, N,N'-Dibenzyl-1,2-ethylenediamine, N1,N2-Dibenzylethane-1,2-diamine, N,N'-Dibenzyl-ethane-1,2-diamine, 1,2-Ethanediamine, N,N'-bis(phenylmethyl)-, benzyl[2-(benzylamino)ethyl]amine, 1,2-Ethanediamine, N1,N2-bis(phenylmethyl)-, N,N'-dibenzylethylene-diamine, Ethylenediamine,N'-dibenzyl-, 1, N,N'-bis(phenylmethyl)-

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS05 Corrosive
Corrosive
GHS06 Acute toxicity
Acute toxicity
GHS07 Irritant or harmful
Irritant or harmful
GHS09 Hazardous to the environment
Hazardous to the environment

Signal word Danger

  • H301Toxic if swallowed
  • H302Harmful if swallowed
  • H314Causes severe skin burns and eye damage
  • H315Causes skin irritation
  • H318Causes serious eye damage
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation
  • H411Toxic to aquatic life with long lasting effects

Precautionary statements P260, P261, P264, P264 + P265, P270, P271, P273, P280, P301 + P316, P301 + P317, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P316, P317, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Benzathine
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Benzathine

Which CAS number identifies Benzathine?
Benzathine is registered under CAS 140-28-3. You may also see it listed as N,N'-Dibenzylethylenediamine, Benzatin, 1,2-Bis(benzylamino)ethane. Our catalogue number for this item is ZX-036692.
What are the formula and molar mass of Benzathine?
For Benzathine, its formula is C16H20N2 and its molar mass is 240.34 g/mol. The systematic (IUPAC) name is N,N'-dibenzylethane-1,2-diamine. InChIKey JUHORIMYRDESRB-UHFFFAOYSA-N lets you match it in any structure database.
How is Benzathine used in pharmaceutical QC?
Benzathine is a characterised reference material linked to Penicillin. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Benzathine?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Benzathine?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Benzathine to my country?
Yes. Because Benzathine is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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