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21653-98-5

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21653-98-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21653-98-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,5 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21653-98:
(7*2)+(6*1)+(5*6)+(4*5)+(3*3)+(2*9)+(1*8)=105
105 % 10 = 5
So 21653-98-5 is a valid CAS Registry Number.

21653-98-5Upstream product

21653-98-5Downstream Products

21653-98-5Relevant academic research and scientific papers

Proline-containing cyclopeptides from the marine sponge phakellia fusca

Zhang, Hong-Jun,Yi, Yang-Hua,Yang, Gen-Jin,Hu, Min-Ye,Cao, Gui-Dong,Yang, Fan,Lin, Hou-Wen

, p. 650 - 655 (2010)

Four new cyclopeptides, phakellistatins 15-18 (2-5), together with five known cyclopeptides, phakellistatin 13 (1), hymenistatin 1, and hymenamides G, H, and J, were isolated from the South China Sea sponge Phakellia fusca. Their structures were elucidate

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