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138772-65-3

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138772-65-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138772-65-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,7 and 2 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138772-65:
(8*1)+(7*3)+(6*8)+(5*7)+(4*7)+(3*2)+(2*6)+(1*5)=163
163 % 10 = 3
So 138772-65-3 is a valid CAS Registry Number.

138772-65-3Relevant articles and documents

Aurantiamide acetate and fluorinated derivatives thereof as well as preparation method and application thereof

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Paragraph 0056-0059, (2021/03/18)

The invention belongs to the technical field of medicines, and discloses aurantiamide acetate and fluorinated derivatives thereof, and a preparation method and application thereof. The general formulaof the aurantiamide acetate, the aurantiamide acetate fluorinated derivatives or pharmaceutically acceptable salts of the aurantiamide acetate and the aurantiamide acetate fluorinated derivatives isshown in the specification, wherein R1 represents OH, CH2OH or OCOCH3, and R2, R3 and R4 each independently represent H, an alkyl group or F. The aurantiamide acetate and the fluorinated derivatives or the pharmaceutically acceptable salts thereof have a good effect of preventing or treating influenza viruses, especially infection caused by influenza A viruses. The aurantiamide acetate is subjected to fluorination modification, so that the biological activity of the aurantiamide acetate is stronger. The aurantiamide acetate and the fluorinated derivative thereof act on a target to aim at viruses and also aim at host cells, so that drug resistance is not easy to generate.

An efficient entry to highly substituted chiral 2-oxopiperazines from α-amino acids via iodocyclization

Jana, Amit Kumar,Das, Sanjit Kumar,Panda, Gautam

, p. 10114 - 10121,8 (2020/09/02)

A short and stereoselective route for the synthesis of 2-oxopiperazines is presented starting from different naturally abundant α-amino acids. The key synthetic steps involved amide coupling, Wittig reaction, HWE olefination, aza-Michael reaction, iodocyc

PHENYLALANINE DIPEPTIDE DERIVATIVES, COMPOSITIONS AND USE THEREOF

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Page/Page column 22, (2009/10/06)

Disclosed are a compound of formula I, stereoisomers, pharmaceutically acceptable salts or hydrates thereof, a pharmaceutical composition comprising the smae, a process for preparing the same and use thereof. The compound may also be used to prepare a medicament to treat viral infections, especially to prepare a medicament to treat hepatitis B virus and human immunodeficiency virus with little toxic side effects.

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