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1202171-77-4

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1202171-77-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1202171-77-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,2,1,7 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1202171-77:
(9*1)+(8*2)+(7*0)+(6*2)+(5*1)+(4*7)+(3*1)+(2*7)+(1*7)=94
94 % 10 = 4
So 1202171-77-4 is a valid CAS Registry Number.

1202171-77-4Upstream product

1202171-77-4Relevant academic research and scientific papers

Diastereoselective α-Fluorination of N- tert-Butanesulfinyl Imidates

Huang, Wei,Yao, Yun,Xu, Yan-Jun,Lu, Chong-Dao

, p. 14777 - 14785 (2018)

A diastereoselective α-fluorination of N-tert-butanesulfinyl imidates was developed. Deprotonation of N-tert-butanesulfinyl imidates with lithium hexamethyldisilazide generates aza-enolates that can be intercepted, with excellent diastereocontrol, by the inexpensive electrophilic fluorinating agent NFSI. This protocol was applied to the preparation of synthetically useful trans-2-fluoro-cyclohexamine with high enantiomeric purity (99.5% ee).

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