Chem-LLC (Felix Chemical Supply) Reviews

Chem-LLC (Felix Chemical Supply) Reviews

founded 2022

new york, united states

6 reviews

Chem-LLC (Felix Chemical Supply) Overview

Felix Chemical Supply (operating as Chem-LLC at felixchem.is) is a domestic research peptide supplier founded in 2022 and based in New York City, positioning itself as an American-owned and operated source for research-grade chemicals with comprehensive third-party testing including endotoxin and sterility panels.

public coas

per-batch coa

ships to us

What customers love about Chem-LLC (Felix Chemical Supply)

Comprehensive Testing Panel

Felix Chemical Supply runs one of the most thorough testing panels in the industry, including quantitative and qualitative analysis, endotoxin testing (added November 2025), and sterility testing — a level of rigor few budget-tier vendors match.

Competitive Budget Pricing

Products are priced competitively relative to peers, with a 52-product catalog spanning $7.99 to $189.99, making them widely regarded as the best budget option for domestic researchers seeking tested injectable peptides.

Domestic US Fulfillment

Based in New York City, Felix ships domestically via UPS (Ground, 2nd Day Air, Next Day Air) with cold-pack options during summer months, enabling fast transit times from a major logistics hub.

Flexible Payment Options

The company accepts credit card payments and offers promotional discounts (e.g., 10% via PEPTIDEPLUS code), reducing the friction common with research chemical vendors that only accept crypto.

Our top-rated vendor

View all vendors

Our rankings are based solely on third-party lab testing rigor, COA transparency, and pricing — no paid placements, no affiliate influence. We update this list as new data comes in.

Based on current scores, this vendor ranks highest across those criteria.

Protide Health

#1 Rated Research Peptide Supplier

What customers dislike about Chem-LLC (Felix Chemical Supply)

Limited Track Record

Founded in 2022, Felix Chemical Supply is relatively new and has not yet accumulated the multi-year reputation of established vendors; Finnrick Analytics lists them as unrated with zero samples independently tested.

Gated Catalog and Slow Website

As of 2026 the full product catalog requires free registration to browse, and the website has been noted as very slow, adding friction for new customers doing price comparison research.

US Shipping Only

Felix Chemical Supply does not ship internationally, limiting its accessibility to domestic US researchers and excluding a significant portion of the global peptide research community.

Reviews shaping this summary

Anonymous

Jan 1, 2025

Needs better order tracking updates

The supplier needs to improve their order tracking updates. Communication after placing an order could be more proactive. Website is also very slow to load.

Smooth communication, quick order fulfillment

Shipping was fast with smooth communication. Discount codes available through social media. Unboxing experience was good — products looked legitimate and proper…

Best budget domestic option

Felix Chemical Supply is the best budget option for domestic researchers seeking affordable, comprehensively-tested injectable peptides. Few competitors offer e…

Dented box, intact vials — quality held up

A dented shipping box arrived with completely intact vials that met rigorous standards for reconstituting peptides with exceptional sterile quality for long-ter…

Fast shipping, great packaging

Order shipped quickly and arrived within about three days. Vials were placed in a padded box for refrigeration while protecting them from light exposure. Tracki…

Company details

Written by the company

Felix Chemical Supply (operating as Chem-LLC at felixchem.is) is a domestic research peptide supplier founded in 2022 and based in New York City, positioning itself as an American-owned and operated source for research-grade chemicals with comprehensive third-party testing includ…

Contact info

New York, United States

Peptide mind is an independant 3rd party

The research peptide ecosystem is polluted by special interest groups, and we're leading the independant charge. Read more...

5

67%

4

17%

3

2

0%

1

Testing standards

In-house HPLC

Mass spectrometry

COA publicly available

Per-batch COA

Third-party labs

Accepted methods

credit card

e check

cash app

Shipping & pricing

Ships to

budget pricing tier

Last verified

June 19, 2026

Chem-LLC (Felix Chemical Supply) reviews

Reviews sourced from across the web and written by real users on PeptideMind. Gathered from popular platforms and our own community so you get the full picture.

We screen reviews, but don't fact-check them

Reviewers' opinions are their own. We may mark a review Verified when we can confirm a real transaction occurred, but we don't validate individual claims. All reviews are screened by automated software to catch guideline violations — flag anything we may have missed.

Customer Service:

Shipping was fast with smooth communication. Discount codes available through social media. Unboxing experience was good — products looked legitimate and properly labeled.

Purity & Accuracy:

Shipping Speed:

Packaging:

Price / Value:

Felix Chemical Supply is the best budget option for domestic researchers seeking affordable, comprehensively-tested injectable peptides. Few competitors offer endotoxin testing at this price point.

A dented shipping box arrived with completely intact vials that met rigorous standards for reconstituting peptides with exceptional sterile quality for long-term stability.

Order shipped quickly and arrived within about three days. Vials were placed in a padded box for refrigeration while protecting them from light exposure. Tracking was provided quickly. Orders arrived well packaged with free Hospira water as a bonus — products looked clean and properly sealed on arrival.

One of the companies I trust for sourcing

This is one of the companies I trust for sourcing my research peps. I like the quality and their testing gives me confidence.

Frequently asked questions

Is Chem-LLC (Felix Chemical Supply) a legitimate peptide vendor?

Based on 6 reviews on PeptideMind, Chem-LLC (Felix Chemical Supply) holds a 4.5/5 overall rating. Chem-LLC (Felix Chemical Supply) provides publicly available certificates of analysis (COAs). As with any research chemical vendor, we recommend reviewing available lab documentation and community feedback before purchasing.

Does Chem-LLC (Felix Chemical Supply) provide certificates of analysis (COAs)?

Yes, Chem-LLC (Felix Chemical Supply) makes COAs publicly available for their products on a per-batch basis. Their testing includes: per-batch COAs, third-party testing via US-based laboratory (unnamed).

What countries does Chem-LLC (Felix Chemical Supply) ship to?

Chem-LLC (Felix Chemical Supply) ships to: US.

What payment methods does Chem-LLC (Felix Chemical Supply) accept?

Chem-LLC (Felix Chemical Supply) accepts the following payment methods: Credit Card, E Check, Cash App.

Where is Chem-LLC (Felix Chemical Supply) based and when were they founded?

Chem-LLC (Felix Chemical Supply) is founded in 2022, based in NEW YORK, United States.

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