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75898-42-9

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75898-42-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75898-42-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,8,9 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 75898-42:
(7*7)+(6*5)+(5*8)+(4*9)+(3*8)+(2*4)+(1*2)=189
189 % 10 = 9
So 75898-42-9 is a valid CAS Registry Number.

75898-42-9Relevant articles and documents

Multiple Absolute Stereocontrol in Cascade Lactone Formation via Dynamic Kinetic Resolution Driven by the Asymmetric Transfer Hydrogenation of Keto Acids with Oxo-Tethered Ruthenium Catalysts

Touge, Taichiro,Sakaguchi, Kazuhiko,Tamaki, Nao,Nara, Hideki,Yokozawa, Tohru,Matsumura, Kazuhiko,Kayaki, Yoshihito

supporting information, p. 16354 - 16361 (2019/10/16)

A straightforward asymmetric construction of chiral fused γ- and δ-lactones containing multiple contiguous stereocenters was successfully developed by either (1) the dynamic kinetic resolution-asymmetric transfer hydrogenation (DKR-ATH) reaction using oxo

One-pot synthesis of α-bromoesters and ketones from β-ketoesters and diketones using supported reagents system

Aoyama, Tadashi,Takido, Toshio,Kodomari, Mitsuo

, p. 1873 - 1876 (2007/10/03)

A simple and efficient method has been developed for the synthesis of α-bromoesters and ketones from β-ketoesters and diketones in one pot using a supported reagents system, CuBr2/Al2O 3-Na2CO3/Al2O3, in which β-ketoester reacts first with CuBr2/Al2O3 and the product, α-bromo-β-ketoester, reacts with Na 2CO3/Al2O3 to give the final product, α-bromoesters in good yields.

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