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  3. VSA 1

VSA 1, a semisynthetic QS-21 (HY-101092) analog, is a saponin adjuvant. VSA 1 potentiates antigen-specific IgG1 and IgG2a immune responses in BALB/c mice, indicating a mixed Th1/Th2 immune response. VSA 1 significantly improves vaccine efficacy after primary immunization and enhances homologous protection.

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VSA 1

VSA 1 Chemical Structure

CAS No. : 2489675-55-8

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Description

VSA 1, a semisynthetic QS-21 (HY-101092) analog, is a saponin adjuvant. VSA 1 potentiates antigen-specific IgG1 and IgG2a immune responses in BALB/c mice, indicating a mixed Th1/Th2 immune response. VSA 1 significantly improves vaccine efficacy after primary immunization and enhances homologous protection[1].

Molecular Weight

1841.08

Formula

C88H145NO39

CAS No.
SMILES

O[C@H]([C@@H]([C@H]([C@@H](O1)C)O[C@H]2[C@@H]([C@H]([C@@H](CO2)O)O)O)O[C@H]3[C@@H]([C@H]([C@@H]([C@H](O3)CO)O)O[C@H]4[C@@H]([C@H]([C@@H](CO4)O)O)O)O)[C@@H]1O[C@H]([C@H]([C@H]([C@H](O5)C)O)O)[C@@H]5OC([C@]67[C@](CC(C)(CC7)C)([H])C8=CC[C@@]([C@@]9([C@@]([C@@](C)([C@H](CC9)O[C@H]%10[C@@H]([C@H]([C@@H]([C@H](O%10)C(NCCCCCCCCCCCC)=O)O)O[C@H]%11[C@@H]([C@@H]([C@H]([C@@H](O%11)C)O)O)O)O[C@@H]%12O[C@@H]([C@@H]([C@@H]([C@H]%12O)O)O)CO)C=O)([H])CC%13)C)([H])[C@]%13(C)[C@@]8(CC6)C)=O

Structure Classification
Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

Purity & Documentation
References
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The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

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× = ×
C1   V1   C2   V2
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Product Name:
VSA 1
Cat. No.:
HY-N15846
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