Product Information
Biological Information
Purity≥95% by HPLC
Physicochemical Information
Materials Information
Toxicological Information
Safety Information according to GHS
Safety Information
Product Usage Statements
Storage and Shipping Information
Ship Code Shipped at Ambient Temperature or with Blue Ice or with Dry Ice
Toxicity Standard Handling
Storage +2°C to +8°C
Protect from Light Protect from light
Do not freeze Ok to freeze
Special InstructionsFollowing reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Packaging Information
Packaged under inert gas Packaged under inert gas
Transport Information
Supplemental Information


Retro-2 - Calbiochem SDS


Safety Data Sheet (SDS) 

Retro-2 - Calbiochem Certificates of Analysis

TitleLot Number


Reference overview
Stechmann, B., et al. 2010. Cell 141, 231.
Data Sheet

Note that this data sheet is not lot-specific and is representative of the current specifications for this product. Please consult the vial label and the certificate of analysis for information on specific lots. Also note that shipping conditions may differ from storage conditions.

Revision24-October-2011 RFH
SynonymsCholera Toxin Retrograde Transport Blocker, Ricin Retrograde Transport Blocker, SLT Retrograde Transport Blocker, 2-(((5-Methyl-2-thienyl)methylene)amino)-N-phenylbenzamide
DescriptionA cell-permeable tricyclic imine compound that inhibits the endosome-to-Golgi retrograde transport, but not cellular uptake, of CtxB (Cholera toxin B chain), StxB (Shiga-like toxin B chain), and the plant toxin ricin from castor seed in HeLa cells (20 µM), without affecting cellular uptake and trafficking of Tf (Transferrin), EGF, and vesicular stomatitis virus glycoprotein VSVGts045. Retro-2 is demonstrated to selectively affect the cellular distribution of SNARE proteins Synt5 and Synt6, but not 24 other Golgi and endocytic pathway proteins. Retro-2 pretreatment is shown to effectively protect against ricin-, Stx1-, and Stx2-induced cytotoxicity in HeLa cultures in vitro (Fold of protection against 4 h toxin incubation = 2.7, 22, and 65, respectively, with 0.5 h 20 µM Retro-2 pretreatment), as well as ricin-induced (2 µg/kg by nasal spray) fatality in mice in vivo (0 mortality with one 200 mg/kg i.p. dose 1h prior to toxin exposure).
FormTan powder
Intert gas (Yes/No) Packaged under inert gas
Chemical formulaC₁₉H₁₆N₂OS
Structure formulaStructure formula
Purity≥95% by HPLC
SolubilityDMSO (50 mg/ml). It is recommended to prepare a stock solution for 3 month use each time and store the unreconstituted material in solid form, protected from moisture and preferably under inert gas, for best long-term stability during storage.
Storage +2°C to +8°C
Protect from light
Do Not Freeze Ok to freeze
Special InstructionsFollowing reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Toxicity Standard Handling
ReferencesStechmann, B., et al. 2010. Cell 141, 231.

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