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686259-72-3

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686259-72-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 686259-72-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,6,2,5 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 686259-72:
(8*6)+(7*8)+(6*6)+(5*2)+(4*5)+(3*9)+(2*7)+(1*2)=213
213 % 10 = 3
So 686259-72-3 is a valid CAS Registry Number.

686259-72-3Upstream product

686259-72-3Downstream Products

686259-72-3Relevant articles and documents

Calyxamides A and B, cytotoxic cyclic peptides from the marine sponge Discodermia calyx

Kimura, Miki,Wakimoto, Toshiyuki,Egami, Yoko,Tan, Karen Co,Ise, Yuji,Abe, Ikuro

, p. 290 - 294 (2012)

Cyclic peptides containing 5-hydroxytryptophan and thiazole moieties were isolated from the marine sponge Discodermia calyx collected near Shikine-jima Island, Japan. The structures of calyxamides A (1) and B (2), including the absolute configurations of all amino acids, were elucidated by spectroscopic analyses and degradation experiments. The structures are similar to keramamides F and G, previously isolated from Theonella sp. The analysis of the 16S rDNA sequences obtained from the metagenomic DNA of D. calyx revealed the presence of Candidatus Entotheonella sp., an unculturable δ-proteobacterium inhabiting the Theonella genus and implicated in the biosynthesis of bioactive peptides.

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