MilliporeSigma Intelligence Profile

sigmaaldrich.comLast reviewed: October 20, 2026Research coverage: 89%

Overall data confidence:Unknown

Identity confidence

Moderate

7 of 10 identity fields independently documented

Corporate continuity

Continuous since 1998; sigmaaldrich.com remains the primary commerce storefront, rebranded to MilliporeSigma after the 2015 acquisition.

Based on domain history and corporate record fields

Regulatory exposure

None identified

Derived from published risk flags

Evidence integrity

High

6 of 7 testing fields documented

Transaction transparency

High

5 of 5 commercial fields documented

Change activity

None tracked

0 change events tracked

Research Incomplete

Research coverage for this vendor is 89%. Our research on MilliporeSigma remains incomplete — what we have verified so far is published below, and research is continuing.

Still to research:

Registration jurisdiction researched (state_of_registration)
Public summary reviewed

Overview#

MilliporeSigma is the U.S./Canada life-science business of Merck KGaA, Darmstadt, Germany — operator of sigmaaldrich.com and the Sigma-Aldrich, Novabiochem, Calbiochem and Millipore brands. It is NOT Merck & Co. (Rahway, NJ); the two companies have been separate since World War I and their records must not be merged. The selling entity named in its own terms is EMD Millipore Corporation, 400 Summit Drive, Burlington, MA 01803; its state of incorporation, formation date and registered agent were not registry-verified in this pass and are recorded as Unknown. Peptide offer: catalog peptides, Novabiochem synthesis building blocks, and a custom peptide synthesis service (HPLC-purified; HPLC/MS analytical data). All defined regulatory searches (FDA warning letters, recalls, import alerts, FTC, state AG, civil litigation, criminal/injunctive) returned No Record Found in the defined search. The named open item is the August 2026 independent antibody validation-image report (allegation-level; antibodies, not peptides). Material pending change: parent Merck KGaA's agreed acquisition of Bio-Techne (announced 25 June 2026; not closed as of this pass). No High/Critical findings.

Company Identity#

Vendor Brand NameMilliporeSigma

HighSource: Merck KGaA Annual Report 2025 — Executive Board (Jean-Charles Wirth, CEO Life Science, appointed 2025-06-01); MilliporeSigma branding in US/Canada

Primary Website Domainsigmaaldrich.com

ModerateSource: MilliporeSigma — official website (intake domain confirmation)

Legal Entity NameEMD Millipore Corporation

HighSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

State of RegistrationNot independently verified

UnknownSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

Entity StatusActive (operating)

ModerateSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

Incorporation / Formation DateNot independently verified

UnknownSource: Wikipedia — Sigma-Aldrich (1975 merger; acquired by Merck KGaA November 2015 for $17 billion)

Named Principals / ManagersJean-Charles Wirth — CEO, Life Science (MilliporeSigma), appointed 1 June 2025 (per Merck KGaA Annual Report 2025). Earlier MilliporeSigma/life-science leadership: Udit Batra. Parent: Merck KGaA, Darmstadt, Germany.

HighSource: Merck KGaA Annual Report 2025 — Executive Board (Jean-Charles Wirth, CEO Life Science, appointed 2025-06-01); MilliporeSigma branding in US/Canada

Registered AgentNot independently verified

UnknownSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

Operating Address400 Summit Drive, Burlington, MA 01803, USA

HighSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

Address ConsistencyConsistent — Burlington, MA is used as headquarters across vendor legal pages and 2025 press releases (Burlington datelines); the legacy Sigma-Aldrich headquarters was St. Louis, MO (pre-2015 heritage).

ModerateSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

Domain and Digital Identity#

Domain Registration Date1998-07-20

HighSource: Verisign RDAP — sigmaaldrich.com

Domain Ownership / Registrar Change HistoryRegistrar: Key-Systems GmbH; RDAP record last changed 2026-06-17; registrant redacted. The domain dates to the independent Sigma-Aldrich era (1998) and has operated continuously through the 2015 Merck KGaA acquisition and the MilliporeSigma rebranding; no impersonation signals.

ModerateSource: Verisign RDAP — sigmaaldrich.com

Website ContinuityContinuous since 1998; sigmaaldrich.com remains the primary commerce storefront, rebranded to MilliporeSigma after the 2015 acquisition.

ModerateSource: Verisign RDAP — sigmaaldrich.com

Contact Channel IntegrityOrdering and support run through the sigmaaldrich.com account portal and the vendor's published customer/technical service channels; no conflicting third-party contact details identified.

ModerateSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

Regulatory and Legal History#

FDA Warning Letter HistoryNo Record Found in the defined search

ModerateSource: Defined web search of fda.gov warning letters — no letter naming Sigma-Aldrich / MilliporeSigma / EMD Millipore

FDA Recall / Safety Action HistoryNo Record Found in the defined search

ModerateSource: Defined web search — no record naming the vendor found

FDA Import Alert / Detention ExposureNo Record Found in the defined search

ModerateSource: Defined web search — no record naming the vendor found

FTC Enforcement HistoryNo Record Found in the defined search

ModerateSource: Defined web search of ftc.gov — no action naming MilliporeSigma / Sigma-Aldrich as respondent

State Regulatory / Attorney General ActionsNo Record Found in the defined search

ModerateSource: Defined web search — no record naming the vendor found

Relevant Civil LitigationNo Record Found in the defined search

ModerateSource: Defined web search — no record naming the vendor found

Criminal / Injunctive ProceedingsNo Record Found in the defined search

ModerateSource: Defined web search — no record naming the vendor found

Testing and COA Evidence#

Public COA AvailabilityProduct documentation including Certificates of Analysis is published per catalog product on sigmaaldrich.com; custom peptide orders are supplied with analytical data (HPLC/MS) per the custom synthesis service description.

ModerateSource: Sigma-Aldrich — Custom Peptide Synthesis service page

Batch / Lot SpecificityCatalog COAs are lot-specific and retrievable by product/lot on the official site; custom synthesis analytical data is order-specific.

ModerateSource: Sigma-Aldrich — Custom Peptide Synthesis service page

Independent Laboratory IdentityIn-house vendor QC; no independent third-party testing laboratory is named for catalog peptides or the custom synthesis service. Novabiochem peptide-synthesis documentation is vendor-generated.

ModerateSource: Novabiochem letters — peptide synthesis building blocks documentation (Sigma-Aldrich)

COA Verification StatusVendor-issued COAs are retrievable from the official site by product/lot; no independent third-party verification service identified.

ModerateSource: Sigma-Aldrich — Custom Peptide Synthesis service page

Test RecencyNot independently verified

UnknownSource: Sigma-Aldrich — Custom Peptide Synthesis service page

Testing CoverageCustom peptide synthesis routinely up to 40 amino acids (longer on inquiry), solid-phase chemistry, all peptides HPLC-purified, milligram-to-gram scale, modifications and peptide libraries/arrays; a second service page states capability up to 200 amino acids with HPLC purification. The Novabiochem brand supplies peptide-synthesis building blocks and reagents with vendor QC specifications.

ModerateSource: Sigma-Aldrich — Custom Peptide Synthesis service page

Evidence ConsistencyNamed in the August 2026 independent research-integrity report (Reese Richardson) covering 15 vendors' antibody validation images; per C&EN, six of the 15 companies responded promising to review their catalogs. Allegation-level independent reporting about antibodies — not peptides, and not a regulatory finding.

ModerateSource: C&EN — New report suggests widespread image manipulation in antibody market (Aug 2026)

Payment, Refund and Shipping#

Accepted Payment MethodsInvoice terms — payment due within 30 days of the invoice date (§5.3, General Terms and Conditions of Sale); orders are placed via web account under the same terms.

ModerateSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

Refund / Return PolicyReturns require the Seller's prior written consent (§8, General Terms and Conditions). Diagnostic reagents, refrigerated/frozen products, and custom products or special orders may not be returned under any circumstances. Authorized returns may be subject to a restocking charge and must be returned in original packaging.

HighSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

Shipping & Fulfillment RepresentationsDelivery is governed by the published General Terms and Conditions; order-specific delivery terms are confirmed at checkout. No peptide-specific shipping representations are published.

LowSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

Terms / Policy StabilitySection-numbered General Terms and Conditions are published consistently across regional sigmaaldrich.com storefronts; no abrupt changes observed in this intake pass.

LowSource: MilliporeSigma / Sigma-Aldrich — General Terms and Conditions of Sale (seller: EMD Millipore Corporation; §5.3 payment; §8 returns)

Customer Complaint PatternNo concentrated fraud or fulfillment complaint pattern identified in the defined search. The vendor publishes a formal customer-complaint management process (investigation, corrective action, product replacement or credit, 30-day response goal). The prominent 2026 criticism is the antibody validation-image report (see evidence_consistency).

ModerateSource: MilliporeSigma — Quality / customer complaint management process data sheet

Material Changes#

No material changes recorded.

Sources#

MilliporeSigma — official website (intake domain confirmation)Tier 2 · Official/CommercialVendor Website

Retrieved: October 20, 2026