# SR17 Labs

> SR17 Labs supplies SR-17018 (CAS 2134602-45-0) as a research compound at 99%+ purity with a full certificate of analysis on every batch. For use in licensed scientific and educational laboratories only — not for human or veterinary consumption.

SR-17018 is a biased μ-opioid receptor (MOR) agonist developed to test the hypothesis that G-protein-biased signaling can produce analgesia with a reduced side-effect profile compared to traditional opioids. It was first reported by the Bohn laboratory at Scripps Research in Schmid et al., Cell 2017. SR17 Labs provides analytical-grade material intended for preclinical pharmacology, compound characterization, and controlled experimental protocols.

## About SR-17018

- [What is SR-17018 — overview](https://sr17labs.com/sr-17018): CAS number, molecular identity, discovery, current research status, and how the compound is supplied.
- [SR-17018 mechanism of action](https://sr17labs.com/sr-17018/mechanism): biased μ-opioid receptor agonism, G-protein versus β-arrestin signaling, bias factor, and points of ongoing scientific debate.
- [SR-17018 vs. alternatives](https://sr17labs.com/sr-17018/vs-alternatives): head-to-head comparison with TRV130 (oliceridine), PZM21, and morphine across bias factor, therapeutic window, tolerance behavior, and clinical status.
- [Research timeline](https://sr17labs.com/sr-17018/research-timeline): chronological citation index of biased μ-opioid agonism from the 1999 β-arrestin2 knockout papers through the 2020 reinterpretations.
- [Safety and handling in the laboratory](https://sr17labs.com/sr-17018/safety-and-handling): regulatory status, storage, stock-solution preparation, PPE, waste handling, and incident response.

## Product

- [Formats and pricing](https://sr17labs.com/#in-stock): precision powder in 1 g, 5 g, and 20 g. Tablet formats are not currently available.
- [Checkout — 1 g powder](https://sr17labs.com/checkout/powder-1g)
- [Checkout — 5 g powder](https://sr17labs.com/checkout/powder-5g)
- [Checkout — 20 g powder](https://sr17labs.com/checkout/powder-20g)

## Company and policies

- [About SR17 Labs](https://sr17labs.com/about): who we are, what we supply, and how we verify quality.
- [Editorial standards](https://sr17labs.com/editorial-standards): which primary sources we cite, review cadence, corrections policy, conflict-of-interest disclosure, and scope limits for research content on this site.
- [Research disclaimer](https://sr17labs.com/research-disclaimer): scope of permitted use, research-only designation, and buyer responsibilities.
- [Shipping and returns](https://sr17labs.com/shipping-and-returns): dispatch windows, international shipping policy, and return conditions.
- [Privacy policy](https://sr17labs.com/privacy-policy)

## Key facts

- Common names: SR-17018, SR17018, SR 17018
- Synonym: 5,6-Dichloro Desmethylchlorphine
- CAS Number: 2134602-45-0
- Intended use: research use only — not for human or animal consumption
- Purity specification: ≥ 99% by HPLC
- Certificate of analysis: provided with every shipment
- Supplied by: SR17 Labs — https://sr17labs.com