A focused look at N-Dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate, 99+%, also known as Sulfobetaine 12 and SB 12, a detergent zwitterionic product identified by CAS 14933-08-5.
Chemistry and structure
N-Dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate, 99+% is the sole product covered in this spotlight. It is supplied under the codes Sulfobetaine 12 and SB 12, and the authoritative CAS number for this material is 14933-08-5. In the provided catalog context, it belongs to the category detergent zwitterionic. Those identifiers are the most important anchors for procurement, documentation, and technical review because they distinguish this material from other sulfobetaine detergents that may differ by alkyl chain length or grade.
The chemical name itself provides useful structural information. The N-dodecyl portion indicates a twelve-carbon hydrophobic chain, while the N,N-dimethyl-3-ammonio-1-propanesulfonate portion indicates a headgroup containing both a positively charged ammonio functionality and a negatively charged sulfonate functionality. That combination is characteristic of a zwitterionic surfactant: the molecule contains internally balanced ionic groups while remaining overall neutral. For readers evaluating detergent class rather than a full specification sheet, that naming-based structural description is the most defensible way to explain the product without introducing unverified physical-property data.
In practical terms, the structure matters because surfactant behavior depends on the relationship between a hydrophobic segment and a polar or ionic headgroup. A dodecyl chain gives the molecule a clear nonpolar region, and the ammonio-sulfonate headgroup gives it a strongly polar region. This amphiphilic architecture is what places Sulfobetaine 12, SB 12 within the broader family of laboratory and formulation detergents used to mediate interactions between aqueous environments and hydrophobic materials. The supplied facts support that classification, but they do not establish additional properties such as formula, appearance, solubility, or storage temperature, so those details are intentionally not asserted here.
Because this is a product spotlight rather than a general review article, the emphasis stays on confirmed identity and category. The exact product name, code set, CAS number, and catalog link are the reliable reference points for users who need to match internal records, purchasing systems, or experimental notes to the correct material. That disciplined use of identifiers is especially important in detergent work, where small naming differences can correspond to meaningfully different compounds.
How it works
As a zwitterionic detergent, N-Dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate functions through the same broad surfactant logic that applies to amphiphilic molecules in many laboratory and formulation workflows. One part of the molecule is hydrophobic and tends to associate with nonpolar surfaces or components, while the charged headgroup region interacts with aqueous surroundings. That dual character is what makes detergents useful for dispersing, organizing, or helping transfer hydrophobic matter into systems where water compatibility is important.
For Sulfobetaine 12, SB 12, the relevant mechanism can be described conservatively without overclaiming application-specific performance. The dodecyl chain provides the nonpolar segment that can associate with hydrophobic domains, and the ammonio-propanesulfonate headgroup provides the zwitterionic segment that supports interaction at aqueous interfaces. In workflow terms, this means the material is considered when a user is selecting a detergent class whose internal charge balance may be relevant to system behavior, screening design, or formulation architecture. General discussions of detergent selection and surfactant-mediated workflows often frame this class-level role in method development and sample handling contexts (Methods in Enzymology, 2009).
It is important, however, to separate class description from validated product-specific claims. The supplied facts do not establish performance in any one assay type, analytical platform, purification method, or biological system. They also do not support claims about compatibility with mass spectrometry, preservation of enzyme activity, reduced denaturation, crystallization support, or broad pH stability. For that reason, this spotlight describes how the chemistry is generally positioned in workflows rather than promising outcomes in a specific protocol. Users should evaluate concentration, matrix, substrate, and process conditions in their own systems before treating the material as suitable for a given task.
That restrained framing is often the most useful one for technical buyers. Instead of assuming a detergent will behave identically across all use cases, it is better to start from what is known with confidence: Sulfobetaine 12, SB 12 is a zwitterionic detergent product, sold as N-Dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate, 99+%, under CAS 14933-08-5. From there, workflow fit should be determined by the user’s own screening and documentation practices.
Typical applications
- Detergent screening in laboratory methods: Considered when a workflow calls for evaluation of a zwitterionic detergent class alongside other surfactant options.
- Surfactant behavior studies: Used in work examining how amphiphilic molecules behave at interfaces or in mixed aqueous and nonpolar systems.
- Formulation development: Included as a candidate material when detergent identity and headgroup type are relevant variables in early-stage formulation work.
- Research reagent selection: Reviewed by users who need a detergent zwitterionic material with the exact identifiers Sulfobetaine 12, SB 12, and CAS 14933-08-5.
Specifications
| Property | Details |
|---|---|
| Product name | N-Dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate, 99+% |
| Product codes | Sulfobetaine 12, SB 12 |
| CAS number | 14933-08-5 |
| Category | Detergent zwitterionic |
| Purity | 99+% |
| Product page | /sulfobetaine-12-sb-12-p-199 |
Considerations
Use the exact identifiers when ordering, qualifying, or recording this material: N-Dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate, 99+%, Sulfobetaine 12, SB 12, and CAS 14933-08-5. That practice reduces the risk of confusion with other sulfobetaine detergents that may have related names but are not the same catalog item. For organizations with internal material master systems, matching the product page slug to the purchasing record can also help maintain traceability.
Handling and storage should follow the current product documentation and the user’s internal safety procedures. The supplied facts do not establish appearance, molecular formula, water solubility, recommended storage temperature, or shelf-life conditions, so those points should not be inferred here. Likewise, no unsupported regulatory, analytical, or biological-performance claims are made in this spotlight. The most reliable approach is to confirm suitability under actual use conditions and to rely on official product documentation for any operational details beyond the identifiers listed above.
Limitations should also be considered in a disciplined way. Knowing that a material is a zwitterionic detergent is useful for class selection, but it does not by itself predict behavior in every matrix, concentration range, or process environment. Performance can vary with the composition of the surrounding system, the presence of salts or other reagents, and the goals of the workflow. Example supporting reagents in a broader method may be selected by the user for buffering, dilution, or sample preparation roles, but this spotlight does not imply that any such combinations have been validated together with the primary product.
Choose this approach when you need a detergent zwitterionic product identified specifically as Sulfobetaine 12, SB 12 and want to review the exact catalog identifiers before use or purchase.