Get your Sigma-Aldrich orders and invoices through an API

What you can build on Sigma-Aldrich

• Search your invoices

  Build this

  Searches the Invoice Center by order number, PO number, invoice status or date range and reads each invoice in the results.

  Takes

  Date range, invoice status (optional), order number or PO number (optional)

  Returns

  Invoice number, invoice date, status, order number, PO number, total

• Check your order status

  Build this

  Reads your orders in the Order Center and, for each one, the order details: status, items and shipping.

  Takes

  Order date from, order number or PO number (optional)

  Returns

  Order number, PO number, order date, status, product numbers, quantities, ship date, tracking number

• Find a certificate of analysis by lot

  Build this

  Searches Certificates of Analysis (COA) on the documents search page by lot/batch number, with the product number when you have it.

  Takes

  Lot/batch number, product number (optional)

  Returns

  Product number, product name, lot/batch number, whether a COA is online, COA link

• Place an order with Quick Order

  Build this

  Enters product numbers and quantities in Quick Order, adds your PO number at checkout and places the order with your account's pricing.

  Takes

  Product numbers with quantities, PO number, shipping address

  Returns

  Order number, PO number, items, prices, order total

Automate Sigma-Aldrich with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• Open orders, checked before the lab starts

  Build this

  Starts

  Every weekday at 7:00

  Step 1

  Check your order status for orders placed in the last 30 days.

  Step 2

  Keep the orders whose status or ship date changed since the last run.

  Step 3

  Email you the list with order number, PO number, status, ship date and tracking number.

• New invoices, handed to accounting

  Build this

  Starts

  Every weekday at 18:00

  Step 1

  Search the Invoice Center for invoices dated in the last 7 days.

  Step 2

  Keep the invoices that were not there on the last run.

  Step 3

  Post invoice number, date, status, order number, PO number and total to your ERP webhook.

• Certificates of analysis for received lots

  Build this

  Starts

  When your system calls the workflow's webhook with received product and lot numbers

  Step 1

  For each lot, find the certificate of analysis by lot/batch number and product number.

  Step 2

  Post product number, product name, lot/batch number, whether a COA is online and its link to your quality system's webhook.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Search your invoices” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "www.sigmaaldrich.com/search_invoices",
    "input": {
      "date_from": "2026-11-01",
      "date_to": "2026-11-11"
    }
  }'

{
  "status": "completed",
  "data": {
    "invoices": [
      {
        "invoice_number": "9310045528",
        "invoice_date": "2026-11-10",
        "status": "Issued",
        "order_number": "3018842210",
        "po_number": "ACME-PO-7741",
        "total": 1284.6
      },
      {
        "invoice_number": "9310044907",
        "invoice_date": "2026-11-06",
        "status": "Issued",
        "order_number": "3018839954",
        "po_number": "ACME-PO-7712",
        "total": 312
      }
    ]
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

Sigma-Aldrich’s own options

Sigma-Aldrich's e-Commerce Solutions lists no public API for its website. It offers e-Procurement, a system-to-system connection to spend management systems such as Ariba, SAP, Oracle, Coupa and Jaggaer, installed as a project, and PIPELINE, a private ordering connection requested through a form. In China it also lists APIs on a B2B Open Platform.

Read on November 12, 2026: e-Commerce Solutions, Navigate Invoices with Ease, B2B Open Platform.

Signing in to Sigma-Aldrich

Sigma-Aldrich signs you in with your username or email address and a password, with a Remember Me option. Your online profile carries your organization's prices. With Fous you sign in once through Sigma-Aldrich's own sign-in with your own account: the login is sealed with AES-256, and an expired session is signed back in.

Worth knowing

The Invoice Center depends on your roles

Some Invoice Center features are not available in every region or need roles your organization grants, so a method sees what your account's roles allow.

Certificates are found by lot number

A COA search needs the lot/batch number; the product number is optional. Some COAs are not online, and those can be requested from the same page.

Contract prices need your account

Account-specific pricing shows when you are signed in, and e-Quotes convert directly to orders. A method that reads prices or places orders works from your own profile.

Shared order links show less

Share Order sends a link from the order details view that anyone can open without signing in, but it shows only product and shipping information and allows no changes.

More in Distribution: industrial and MRO

• Motion
• MISUMI
• Rexel France
• Sonepar Onlineshop
• RS
• 京东企业购
• Fastenal
• Würth Online-Shop
• Airgas
• McMaster-Carr
• Fisher Scientific
• VWR (Avantor)
• thermofisher.com
• SiePortal
• mySchneider
• MSC Industrial Supply
• モノタロウ
• 震坤行
• ODP Business Solutions
• Staples Business Advantage
• アスクル
• Uline
• Lyreco Webshop

Other industries: Magnit VMS, 340B OPAIS, PPL, CounselLink, Dubai Trade, LPL ClientWorks.