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20778-34-1

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20778-34-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20778-34-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,7,7 and 8 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 20778-34:
(7*2)+(6*0)+(5*7)+(4*7)+(3*8)+(2*3)+(1*4)=111
111 % 10 = 1
So 20778-34-1 is a valid CAS Registry Number.

20778-34-1Upstream product

20778-34-1Relevant 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

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