FDA Investigator

Hongjian Ding

Latest inspection on record: Saint Louis, United States, April 2011

FDA inspection record · Last updated July 12, 2026

Overview

  • 2 inspections across 2 sites are on record.
  • 2 Form 483 observations are attributed to this investigator.
  • Most recent recorded activity is 2011-04-25.

At a glance

Inspections

2

Sites

2

Observations

2

Career since

Apr 2011

Recent inspections

Most recent inspections in the published record.

SiteDateCategoryForm 483
Sigma-Aldrich Co. LLC25 Apr 2011On file
Sigma-Aldrich Manufacturing LLC19 Apr 2011On file

Sites inspected

Sigma-Aldrich Co. LLCSaint Louis, United States1 insp.
Sigma-Aldrich Manufacturing LLCSaint Louis, United States1 insp.

Co-investigators

Investigators who share inspections with this person.

Full investigator report

Get the verbatim findings behind Hongjian Ding's 2 observations

Source 483 PDFs, verbatim observations, and how each site responded, so your team knows what they cite before they arrive.

  • New inspections and Form 483s, mapped to the CFR citation
  • Warning letter outcomes, and the citation patterns they repeat
  • Their co-investigators, so no surprises about who shows up on site