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API Reference Standards

Remimazolam Besylate

Reference StandardAvailable on request

Remimazolam Besylate (CAS 1001415-66-2) supplier Zemixal. Request a quote with price, lead time and documents. Part of our API Reference Standards range.

Pack sizes
Remimazolam Besylate chemical structure
CAS number1001415-66-2
FormulaC27H25BrN4O5S
Molar mass597.5 g/mol
Physical formSolid
HS code38229090
InChIKeyQMTKNJZIWGTNTE-LMOVPXPDSA-N
IUPAC namebenzenesulfonic acid;methyl 3-[(4S)-8-bromo-1-methyl-6-pyridin-2-yl-4H-imidazo[1,2-a][1,4]benzodiazepin-4-yl]propanoate

About Remimazolam Besylate

Remimazolam Besylate belongs to the Remimazolam reference-standard family in the Zemixal catalogue. Key data (Reference Standard): CAS 1001415-66-2, formula C27H25BrN4O5S and molar mass 597.5 g/mol. It is handled as a solid.

Use cases we see most often

  • Identification & assay
  • Method development & validation
  • QC reference material

Storage and safety notes

It carries the GHS signal word Warning (H302, H312, H317 and H332), so wear gloves and eye protection and work with good ventilation.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. Each lot travels with a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Remimazolam

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

Remimazolam standards

Typical uses

  • Identification & assay
  • Method development & validation
  • QC reference material

Applications

Specifications and identifiers

Specifications of Remimazolam Besylate
Product nameRemimazolam Besylate
Catalogue numberZX-042435
CAS number1001415-66-2
IUPAC namebenzenesulfonic acid;methyl 3-[(4S)-8-bromo-1-methyl-6-pyridin-2-yl-4H-imidazo[1,2-a][1,4]benzodiazepin-4-yl]propanoate
Molecular formulaC27H25BrN4O5S
Molar mass597.5 g/mol
Exact mass596.0729
GradeReference Standard
Physical formSolid
H-bond donors / acceptors1 / 8
Topological polar surface area132 Ų
HS code38229090
InChIKeyQMTKNJZIWGTNTE-LMOVPXPDSA-N
SMILESCC1=CN=C2N1C3=C(C=C(C=C3)Br)C(=N[C@H]2CCC(=O)OC)C4=CC=CC=N4.C1=CC=C(C=C1)S(=O)(=O)O
PubChem CID23658607
SynonymsRemimazolam (benzenesulfonate), Remimazolam Benzenesulfonate, ONO-2745BS, ONO-IN-251, CNS-7056B, Remimazolam besilate, CNS 7056B, Remimazolam besilate (JAN), Remimazolam besylate (USAN)

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

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H302Harmful if swallowed
  • H312Harmful in contact with skin
  • H317May cause an allergic skin reaction
  • H332Harmful if inhaled
  • H412Harmful to aquatic life with long lasting effects

Precautionary statements P261, P264, P270, P271, P272, P273, P280, P301 + P317, P302 + P352, P304 + P340, P317, P321, P330, P333 + P317, P362 + P364, P501

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 Remimazolam Besylate
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 Remimazolam Besylate

Which CAS number identifies Remimazolam Besylate?
Remimazolam Besylate is registered under CAS 1001415-66-2. You may also see it listed as Remimazolam (benzenesulfonate), Remimazolam Benzenesulfonate, ONO-2745BS. Our catalogue number for this item is ZX-042435.
What are the formula and molar mass of Remimazolam Besylate?
For Remimazolam Besylate, its formula is C27H25BrN4O5S and its molar mass is 597.5 g/mol. InChIKey QMTKNJZIWGTNTE-LMOVPXPDSA-N lets you match it in any structure database.
How is Remimazolam Besylate used in pharmaceutical QC?
Remimazolam Besylate is a characterised reference material linked to Remimazolam. 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 Remimazolam Besylate?
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 Remimazolam Besylate?
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 Remimazolam Besylate to my country?
Yes. Because Remimazolam Besylate 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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