List Labs Technical Support

All users must log in to gain access to create a support ticket for technical assistance and track all cases. If you are new to our site, please create an account.

Cholera Toxin (Product #101) Discontinuation Redirected To Utilize Cholera Toxin (Azide-Free) (Product #100B)

Last Updated: Apr 18, 2019 04:35PM PDT
Thank you for your interest in List Labs.

List Labs has discontinued Product #101B, Cholera Toxin from Vibrio cholerae (1 mg) and #101C, Cholera Toxin from Vibrio cholerae (2 mg). 

We recommend transitioning from Products #101B/C, Cholera Toxin from Vibrio cholerae to Product #100B, Cholera Toxin (AZIDE-FREE) from Vibrio cholerae.  We make the following recommendations for your transition:

Product #100B; Cholera Toxin (AZIDE-FREE) from Vibrio cholerae may be substituted for Product #101B, if the user accounts for the formulation differences.  Both products contain the same quantity of toxin per vial (1.0 mg).  For Product #100B, reconstitution with 1.0 mL of water results in a 1 mg/mL toxin solution in a buffer with the following component concentrations:  0.05 M Tris, 0.2 M NaCl, 0.001 M Na2EDTA at pH 7.5.  For Product #101B, reconstitution with half that amount of water (0.5 mL) resulted in a 2 mg/mL toxin solution with the same concentrations of the buffer components, and in addition, Product #101B contained 0.003 M NaN3.  The user may add the sodium azide preservative to product #100B, if desired.

Product #100B; Cholera Toxin (AZIDE-FREE) from Vibrio cholerae may be substituted for Product #101C, if the researcher accounts for the formulation differences.  While Product #101C contained 2.0 mg per vial, Product #100 contains 1.0 mg per vial.  When Product #100B is reconstituted with 1.0 mL of water, the resulting 1 mg/mL toxin solution will have buffer components with the following concentrations:  0.05 M Tris, 0.2 M NaCl, 0.001 M Na2EDTA at pH 7.5.  For Product #101C, reconstitution with less than half that amount of water (0.4 mL) resulted in a 5 mg/mL toxin solution in the same buffer, and in addition, Product #101C contained 0.003 M NaN3.  The user may add the sodium azide preservative to product #100B, if desired. 

Large quantities of Product #101B or Product #101C may be obtained through Bulk Requests and Customer Orders

For more information regarding List Labs Product #100B, Cholera Toxin (AZIDE-FREE) from Vibrio cholerae, to follow is a link to the product page: 

https://www.listlabs.com/products/buy-cholera-toxin-azide-free-from-vibrio-cholerae

If you have additional inquiries, please feel free to continue your search in our Knowledge Base
or contact us with your question by submitting a support ticket here:  https://listlabsinc.desk.com/customer/login?return_to=%2F
0ffdb7e3300fe954e7f9f4ebfe1031f7@listlabsinc.desk-mail.com
https://cdn.desk.com/
false
desk
Loading
seconds ago
a minute ago
minutes ago
an hour ago
hours ago
a day ago
days ago
about
false
Invalid characters found
/customer/en/portal/articles/autocomplete