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  1. Beta-Carotene | C40H56 | CID 5280489 - PubChem

  2. β-Carotene - Wikipedia

  3. Carotene - Wikipedia

  4. β Carotene - NIST Chemistry WebBook

  5. b-Carotene | C40H56 | CID 46783370 - PubChem

  6. Beta carotene: Uses, Interactions, Mechanism of Action

  7. What is Beta-Carotene? - News-Medical.net

  8. beta-Carotene | C40H56 - ChemSpider

  9. Formula of Beta-carotene (C40H56) - Mol-Instincts

  10. Beta-carotene - Encyclopedia.com