Obinutuzumab (Afutuzumab)

  • # LGM Pharma is a Obinutuzumab (Afutuzumab) CAS# 949142-50-1 API supplier distributor based in the USA. Inquire about DMF, cGMP, price, availability, samples, sourcing, purity and more.
  • # Questions? Call our customer API support number 1-(800)-881-8210.
  • # LGM Pharma offers this active ingredient but not the finished dosage forms.
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Product Details:

  • Product Name: Obinutuzumab (Afutuzumab)
  • CAS #: 949142-50-1
  • Mode of Action:

    In contrast to rituximab, which is a classic type I CD20 antibody, obinutuzumab binds to type II CD20 antibodies. This allows obinutuzumab to have a much higher induction of antibody-dependant cytotoxicity and a higher direct cytotoxic effect than the classic CD20 antibodies.

  • Pharmacodynamics:

    Obinutuzumab is more potent than rituximab in depleting B-cells, antitumor activity, and tumor regression.

  • Metabolism:

    Obinutuzumab is not metabolized by the liver.

  • Toxicity:

    The most serious toxicities observed with obinutuzumab are Hepatitis B virus (HBV) reactivation and progressive multifocal leukoencephalopathy (PML). HBV reactivation can occur with all anti-CD20 antibodies and can result in hepatic failure, fulminant hepatitis, and death. PML occurs as a result of JC virus infection and can be fatal as well. Other common but less serious adverse reactions include infusion reactions (pre-treat with glucocorticoids, acetaminophen, and anti-histamine to prevent this), neutropenia, thrombocytopenia, and Tumor Lysis Syndrome (TLS) (pre-treat patients, especially with a high lymphocyte count and/or a high tumor burden, with anti-hyperuricemics and hydration). It is also recommended to NOT administer live virus vaccinations prior to or during obinutuzumab treatment.

  • ATC: L01XC15
  • DrugBank: DB08935
  • Formula: C6512H10060N1712O2020S44
  • Molecular Mass: 146100 daltons
  • Synonyms: Afutuzumab, Afutuzumab [Previous USAN], GA 101, GA101, Gazyva, huMAB(CD20), huMAB, huMABCD20, Obinutuzumab, Ro 5072759, Ro5072759, UNII-O43472U9X8
  • General Reference:


    1. FDA label.
Products currently covered by valid US Patents are offered for R&D use in accordance with 35 USC 271(e)+A13(1). Any patent infringement and resulting liability is solely at buyer risk.

API’s From Quality Manufacturers:

  • Streamlined API supply towards initial research stages as well as larger quantities of cGMP material for clinical trials and product commercialization
  • Premium quality GMP certified and fully accredited API manufacturing plants


  • Technical packages as well as access to filed DMF,
    ASMF or CEP (subject to availability)
  • Regulatory and technical assistance towards any
    submission type based on specific customer requirements

LGM Pharma Acquires CDMO

On July 27, 2020, LGM Pharma announced its acquisition of the formulation development and drug product contract manufacturing business of Nexgen Pharma, Inc. As a result, you will notice our new logo and visuals throughout the website. We’re working on updates to reflect the exciting, expanded CDMO capabilities and services we now can offer you.

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