Prop 65 Notices

Prop 65 notice 2019-02266: MedChemExpress LLC

Maria Elizabeth Romero filed this California Prop 65 60-day notice on December 6, 2019. It names MedChemExpress LLC, MedChemExpress USA and Shanghai Haoyuan ChemExpress Co., Ltd. and alleges exposure to All-trans retinoic acid from Chemical products which contain Retinoic Acid.

The violations below are alleged in a 60-day notice. They are not proven. A 60-day notice is not a lawsuit and not a finding of liability.

AG number
2019-02266
Date filed
Noticing party
Plaintiff attorney
Benjamin D. Weston
Alleged violators
Chemicals
Source or product
Chemical products which contain Retinoic Acid
Official notice
Notice PDF at oag.ca.gov
Official record
Attorney General record for 2019-02266
Last checked
November 11, 2026

What happened after this notice

Outcomes for this notice have not been checked yet. A settlement is not an admission and not a finding that anyone broke the law.

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Other notices naming MedChemExpress LLC

  • MedChemExpress LLC and 2 more: Acetazolamide in All products offered for sale by MedChemExpress LLC, MedChemExpress USA, and/or Shanghai Haoyuan Chemexpress Co., Ltd. on the Web site at https://www.medchemexpress.com whose primary component is a chemical listed on Attachment B to the Notice.
    Notice 2020-00410, filed 2020-02-19 by Maria Elizabeth Romero
  • MedChemExpress LLC: 1,1,1,2-Tetrachloroethane in All products sold by MedChemExpress via the referenced Web site which contain a Listed Chemical in a purity of 10 percent or higher, whether in solid form or in solution.
    Notice 2019-01432, filed 2019-07-26 by Maria Elizabeth Romero

Recent notices filed by Maria Elizabeth Romero

  • ChemScene Limited Liability Company: A-alpha-C (2-Amino-9H-pyrido [2,3-b]indole) in All products offered for sale by ChemScene Limited Liability Company on the Web site at https://www.chemscene.com whose primary component is a chemical listed on Attachment B to the Notice.
    Notice 2020-00413, filed 2020-02-19 by Maria Elizabeth Romero
  • Thermo Fisher Scientific Inc., d.b.a. Alfa Aesar ("Alfa Aesar"): 1-Amino-2,4-dibromoanthraquinone in All products offered for sale by Alfa Aesar on the Web site at https://www.alfa.com whose primary component is a chemical listed on Attachment B to the Notice.
    Notice 2020-00170, filed 2020-01-24 by Maria Elizabeth Romero
  • LGC Standards Inc. and 3 more: A-alpha-C (2-Amino-9H-pyrido [2,3-b]indole) in All products offered for sale by LGC on the Web site at https://us.lgcstandards.com whose primary component is a chemical listed on Attachment B to the Notice.
    Notice 2020-00120, filed 2020-01-17 by Maria Elizabeth Romero
  • Adooq Bioscience, LLC: Acetazolamide in All products offered for sale by Adooq on the Web site at https://www.adooq.com whose primary component is a chemical listed on Attachment B of the Notice.
    Notice 2020-00119, filed 2020-01-17 by Maria Elizabeth Romero
  • BioVision, Inc.: Actinomycin D in All products offered for sale by BioVision, Inc. on the Web site at https://www.biovision.com whose primary component is a chemical listed on Attachment B to the Notice.
    Notice 2020-00118, filed 2020-01-17 by Maria Elizabeth Romero