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Description
Coelenterazine f _ 40908ESCoelenterazine f is a derivative of native coelenterazine and serves as a substrate for aequorin (jellyfish luminescent protein). The structural difference between coelenterazine f and native coelenterazine lies in the substitution of the hydroxyl group on the phenol ring at the R 1 position with a fluorine (F) atom. When coelenterazine f and aequorin are oxidized, they are activated to form a metastable complex of coelenterazine. The formation of
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.8 ★★★★★
Based on 1692 reviews
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Product Reviews
★★★★★ 3
Good watch, not incredibly durable for everyday use.
Color: silver/brown
A nice watch, the date feature and the glow in the dark were quite helpful. It lasted be about 6 months of regular use. Unfortunately it stopped keeping time (intermittent freezing) and the second hand fell off, I'm kinda disappointed with its durability. Unsure of the initial cause, I guess I hit something with my wrist.
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Reviewed in the United States on September 14, 2025
★★★★★ 5
Inexpensive good looking watch
Color: silver/glowing/green, Color: silver/glowing/green
Very nice looking watch
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Reviewed in the United States on May 16, 2026
★★★★★ 5
EXCELLENT WATCH FOR THE MONEY
Color: Black
The watch is reliable, well-made and looks high-end on the wrist. Excellent watch for the money!
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Reviewed in the United States on April 6, 2026
★★★★★ 5
Fresh af
Color: Black
Gorgeous watch. Classic, great quality. Highly recommend.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Really classy watch!
Color: Brown/Stainless Steel/White, Color: Brown/Stainless Steel/White
Really looking watch, it looks expensive! It gives more confidence when wearing outfits. It's simple to look at, very minimalist, but it shows the date and day. I really like the roman numerals too!
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Reviewed in the United States on April 8, 2026
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