Cas 99377-95-4,(6S,7S)-7-((S)-1-Fluoro-ethyl)-1-aza-bicyclo[4.2.0]oct-2-ene-4,8-dione

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Check Digit Verification of cas no

The CAS Registry Mumber 99377-95-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,3,7 and 7 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 99377-95:
(7*9)+(6*9)+(5*3)+(4*7)+(3*7)+(2*9)+(1*5)=204
204 % 10 = 4
So 99377-95-4 is a valid CAS Registry Number.

99377-95-4Upstream product

99377-93-2 [(2R,3R)-2-(3-Bromo-2-oxo-propyl)-3-((R)-1-fluoro-ethyl)-4-oxo-azetidin-1-yl]-(triphenyl-λ⁵-phosphanylidene)-acetic acid 4-nitro-benzyl ester

99377-95-4Downstream Products

99377-95-4Relevant academic research and scientific papers

SYNTHESIS OF CARBAPENEMS WITH A RXCH2-SUBSTITUENT IN THE 3-POSITION

Vries, Johannes G. de,Sigmund, Gerhard,Vorisek, Georg

, p. 1915 - 1919 (2007/10/02)

Carbapenems 6 were prepared by reacting mercaptans with bromoketone 3 followed by a Wittig sequence, or better through advanced intermediate 9.The carbapenem carboxylates were chemically unstable; stability was not improved by changing the oxidation state

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