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Updated: Jul 17, 2026
![Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F60786.jpg&w=3840&q=50)
Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
An Acetylene-Thiophene Derivative from Chamaemelum fuscatum: A Phototoxic Agent
J de Pascual Teresa1, J Anaya, E Caballero
1Department of Organic Chemistry, Salamanca University, 37008-Salamanca, Spain.
No abstract available in PubMed .
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Pigmentation
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...