The CAS number 112809-51-5 is a unique numerical identifier assigned by the Chemical Abstracts Service (CAS) to Letrozole, a medication widely used in the treatment of hormonally-responsive breast cancer. CAS numbers are internationally recognized and serve as a standardized method of identifying chemical substances.
The Chemical Abstracts Service, a division of the American Chemical Society, assigns these numbers to every chemical that has been described in the literature, ensuring a unique identifier for each substance. This system allows for the precise identification and cataloging of chemical compounds, facilitating research, regulatory compliance, and communication across different scientific disciplines.
Letrozole, identified by CAS number 112809-51-5, is an aromatase inhibitor used to treat estrogen receptor-positive breast cancer in postmenopausal women. By blocking the enzyme aromatase, Letrozole reduces the production of estrogen, which can fuel the growth of certain types of breast cancer. This makes it a crucial drug in the management of breast cancer, particularly in reducing the risk of recurrence after initial treatment.
The CAS number 112809-51-5 provides several benefits:
Precision in Identification: It ensures that researchers, healthcare professionals, and regulatory bodies refer to the exact same chemical substance, eliminating confusion that might arise from the use of different names or synonyms.
Regulatory Compliance: Regulatory agencies use CAS numbers to track and manage the approval, distribution, and use of chemical substances. This helps in maintaining safety standards and ensuring that the substances are used appropriately.
Research and Development: Scientists and researchers rely on CAS numbers to locate relevant studies, data, and resources related to specific chemicals. This aids in advancing scientific knowledge and developing new applications for these substances.
In summary, the CAS number 112809-51-5 is an essential identifier for Letrozole, aiding in its precise identification and facilitating various aspects of its use in medicine and research.
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