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149204-99-9

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149204-99-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149204-99-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,2,0 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 149204-99:
(8*1)+(7*4)+(6*9)+(5*2)+(4*0)+(3*4)+(2*9)+(1*9)=139
139 % 10 = 9
So 149204-99-9 is a valid CAS Registry Number.

149204-99-9Relevant articles and documents

A new method for rapid solution synthesis of shorter peptides by use of PyBOP

Hoeg-Jensen,Havsteen Jakobsen,Holm

, p. 6387 - 6390 (1991)

By using PyBOP promoted coupling of Fmoc protected amino acids, and adopting the deprotection/washing procedure of the Fmoc Amino Acid Chloride Solution Technique (FAACST), a sample of [leucine5] enkephalin has been synthesized in a rapid, cont

Ynamides as Racemization-Free Coupling Reagents for Amide and Peptide Synthesis

Hu, Long,Xu, Silin,Zhao, Zhenguang,Yang, Yang,Peng, Zhiyuan,Yang, Ming,Wang, Changliu,Zhao, Junfeng

supporting information, p. 13135 - 13138 (2016/10/22)

A highly efficient, two-step, one-pot synthetic strategy for amides and peptides was developed by employing ynamides as novel coupling reagents under extremely mild reaction conditions. The ynamides not only are effective for simple amide and dipeptide synthesis but can also be used for peptide segment condensation. Importantly, no racemization was detected during the activation of chiral carboxylic acids. Excellent amidation selectivity toward amino groups in the presence of -OH, -SH, -CONH2, ArNH2, and the NH of indole was observed, making the protection of these functional groups unnecessary in amide and peptide synthesis.

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