20973-05-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20973-05-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,7 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 20973-05:
(7*2)+(6*0)+(5*9)+(4*7)+(3*3)+(2*0)+(1*5)=101
101 % 10 = 1
So 20973-05-1 is a valid CAS Registry Number.
InChI:InChI=1/C11H13NO2/c1-2-7-12-8-14-10-6-4-3-5-9(10)11(12)13/h3-6H,2,7-8H2,1H3
20973-05-1Relevant academic research and scientific papers
Copper-catalyzed tandem aryl-halogen hydroxylation and CH2Cl2-based N,O-acetalization toward the synthesis of 2,3-dihydrobenzoxazinones
Chen, Xuwen,Hao, Wenyan,Liu, Yunyun
supporting information, p. 3423 - 3426 (2017/04/26)
The concise synthesis of 2,3-dihydro-4H-benzo[e][1,3]oxazin-4-ones has been accomplished by copper-catalyzed tandem reactions of o-halobenzamides, LiOH and dichloromethane. The aryl-halogen bond hydroxylation and subsequent N,O-acetalization on CH2/
