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65638-93-9

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65638-93-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 65638-93-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,6,3 and 8 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 65638-93:
(7*6)+(6*5)+(5*6)+(4*3)+(3*8)+(2*9)+(1*3)=159
159 % 10 = 9
So 65638-93-9 is a valid CAS Registry Number.

65638-93-9Relevant articles and documents

Facile synthesis of optically active imidazole derivatives

Marek, Ales,Kulhanek, Jiri,Ludwig, Miroslav,Bures, Filip

, p. 1183 - 1190 (2007)

Five optically active imidazole derivatives have been synthesized via a facile 4-step reaction sequence starting from commercially available and inexpensive N-Cbz amino acids. While microwave assisted condensation was unsuccessful, the condensation of the

Synthesis of Acetaminophen Analogues Containing α-Amino Acids and Fatty Acids for Inhibiting Hepatotoxicity

Imai, Nobuyuki,Jung, Seunghee,Kawashima, Yuya,Noguchi, Takuya

, p. 3686 - 3696 (2019/09/30)

Acetaminophen is a popular antipyretic analgesic medicine that has weaker anti-inflammatory properties and lower incidence of side effects than nonsteroidal anti-inflammatory drugs (NSAIDs). However, acetaminophen causes hepatotoxicity due to the reactive metabolite N -acetyl- p -benzoquinone imine (NAPQI). We have obtained acetaminophen analogues in 57-99percent yields by using aniline derivatives with protected α-amino acids and fatty acids via the corresponding mixed carbonic carboxylic anhydrides in aqueous MeCN. We have also succeeded in synthesizing AM404 analogues in 76-97percent yields, which are expected to be promising candidates for reducing hepatotoxicity.

Double axial chirality promoted asymmetric [2,3] Stevens rearrangement of N-cinnamyl l-alanine amide-derived ammonium ylides

Tayama, Eiji,Naganuma, Noriko,Iwamoto, Hajime,Hasegawa, Eietsu

supporting information, p. 6860 - 6862 (2014/06/23)

The base-induced asymmetric [2,3] Stevens rearrangement of N-cinnamyl tetraalkylammonium ylides derived from l-alanine amides proceeds via a double axially chiral intermediate to afford the corresponding α-substituted alanine derivatives with high enantio- and diastereoselectivities. the Partner Organisations 2014.

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