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Original illustration for Reconstitution Solution (10 mL) research notes: abstract molecular artwork in orange and teal
Original illustration by USA Peptide Vendors; artistic, not a structural model.

Bench sheet · Diluent

Reconstitution Solution (10 mL): bench notes and specs

Sterile water with 0.9% benzyl alcohol as a preservative, for reconstituting lyophilized peptides. The benzyl alcohol keeps a multi-use vial bacteriostatic after it's punctured.

Cofactors & DiluentsCAS 100-51-6Bacteriostatic waterBAC waterUpdated 2026-11-09
  1. 01

    What's in it

    Sterile water with 0.9% benzyl alcohol as a preservative, for reconstituting lyophilized peptides.

    The benzyl alcohol keeps a multi-use vial bacteriostatic after it's punctured. Purgo sells it in 10 mL vials.

  2. 02

    Reference values

    • CAS number100-51-6
    • Molecular formulaC7H8O
    • Molecular weight108.14 g/mol
    • PubChem CID244

    Values are for benzyl alcohol, the 0.9% preservative. The rest is water (CAS 7732-18-5).

    Verified 2026-11-09 against PubChem CID 244 and PubChem CID 962. Values we couldn't verify are left out.

  3. 03

    Handling and paperwork

    • Benzyl alcohol isn't suitable for every peptide or assay; check your protocol before switching from sterile water
    • Purgo sells it as “Reconstitution Solution”. Make sure the COA names the analyte, not just the store label.
    • Match the CAS number on the certificate to 100-51-6.
    • Check the expiry and lot on the vial; preserved water is single-lot like any reagent.
  4. 04

    Sourcing

Biochemistry

Evidence level: Review of bacteriostatic preserved saline. All mechanism maps

Bacteriostatic water mechanism diagramHow the preservative keeps a punctured multi-use vial bacteriostatic. Targets: Microbial growth. Preservative: Benzyl alcohol 0.9%. Effect: Growth inhibited.Bacteriostatic water mechanism mapHow the preservative keeps a punctured multi-use vial bacteriostaticBacteriostatic water0.9% benzyl alcoholMicrobial growthafter repeated punctures [1]Benzyl alcohol 0.9%[1]Growth inhibitedbacteriostatic, not sterilizing [1]Evidence: Review of bacteriostatic preserved saline. Numbers in brackets refer to the citedsources.usapeptidevendors.com · Research Use OnlyRISK ADDRESSEDPRESERVATIVEEFFECT
The review covers preserved saline; Purgo's solution uses water. The preservative works the same way. Open SVG
  1. Hunt SV et al. Bacteriostatic preserved saline for pain-free periocular injections: review. Eye (Lond). 2022;36:1546-1552.

FAQ

What is Reconstitution Solution (10 mL)?

Sterile water with 0.9% benzyl alcohol as a preservative, for reconstituting lyophilized peptides. The benzyl alcohol keeps a multi-use vial bacteriostatic after it's punctured. Purgo sells it in 10 mL vials.

What are Reconstitution Solution (10 mL)'s CAS number and molecular weight?

CAS 100-51-6, formula C7H8O, 108.14 g/mol, per PubChem CID 244 and PubChem CID 962. Values are for benzyl alcohol, the 0.9% preservative. The rest is water (CAS 7732-18-5).

Where can US labs buy Reconstitution Solution (10 mL)?

Purgo Labs stocks it as “Reconstitution Solution”; code usapeptidevendors takes 25% off at checkout. This page also lists the best-documented second vendor from our 112-vendor directory.

Is research-grade Reconstitution Solution (10 mL) for human use?

No. Vendor material is sold for Research Use Only, not for human or veterinary use.