HomeDiscontinuedNEBNext® Multiplex Oligos for Illumina® (Index Primers Set 2)
NEBNext® Multiplex Oligos for Illumina® (Index Primers Set 2)
This product was discontinued on December 15, 2025. Alternative products are the range of NEBNext® Multiplex Oligos for Illumina® (96 Unique Dual Index Primer Pairs Sets 1-5) (NEB #E6440, E6442, E6444, E6446, E6448).
Catalog # E7500 was discontinued on December 15, 2025
NEBNext® Multiplex Oligos provide adaptors and primers to enable high yield multiplex Illumina® library production. The unique hairpin loop structure of the NEBNext Adaptor minimizes adaptor-dimer formation, and NEBNext index PCR primers enable index incorporation during library amplification.
Incorporating a novel hairpin loop structure, the NEBNext Adaptor ligates with increased efficiency to end-repaired, dA-tailed DNA. The loop contains a U, which is removed by treatment with USER™ Enzyme (a mix of UDG and Endo VIII), to open up the loop and make it available as a substrate for PCR. During PCR, barcodes can be incorporated by use of the NEBNext index primers, thereby enabling multiplexing.
NEBNext Oligos can be used with NEBNext products, and with other standard Illumina-compatible library preparation protocols.
Additional single- or dual-barcode primer options are available, in 12- and 96- index formats (NEB #E7335, NEB #E7710, NEB #E7730, NEB #E6609, NEB #E7600). A methylated version of the NEBNext Adaptor is also available for use with bisulfite sequencing protocols (NEB #E7535).
Figure 1: Workflow
Functional Validation
Each set of reagents is functionally validated together through construction and sequencing of genomic DNA libraries on the Illumina sequencing platform.
Lot Control
The lots provided are managed separately and qualified by additional functional validation. Individual reagents undergo standard enzyme activity and quality control assays, and also meet stringent criteria in the additional quality controls listed on each individual component page
This product is related to the following categories:
Quality Control tests are performed on each new lot of NEB product to meet the specifications designated for it. Specifications and individual lot data from the tests that are performed for this particular product can be found and downloaded on the Product Specification Sheet, Certificate of Analysis, data card or product manual. Further information regarding NEB product quality can be found here.
Specifications & Change Notifications
The Specification sheet is a document that includes the storage temperature, shelf life and the specifications designated for the product. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]
The Certificate of Analysis (COA) is a signed document that includes the storage temperature, expiration date and quality controls for an individual lot. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]_[Lot Number]
Products and content are covered by one or more patents, trademarks and/or copyrights owned or controlled by New England Biolabs, Inc (NEB). The use of trademark symbols does not necessarily indicate that the name is trademarked in the country where it is being read; it indicates where the content was originally developed. The use of this product may require the buyer to obtain additional third-party intellectual property rights for certain applications. For more information, please email busdev@neb.com.
This product is intended for research purposes only. This product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.
New England Biolabs (NEB) is committed to practicing ethical science – we believe it is our job as researchers to ask the important questions that when answered will help preserve our quality of life and the world that we live in. However, this research should always be done in safe and ethical manner. Learn more.
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