20978-96-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20978-96-5 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 8 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 20978-96:
(7*2)+(6*0)+(5*9)+(4*7)+(3*8)+(2*9)+(1*6)=135
135 % 10 = 5
So 20978-96-5 is a valid CAS Registry Number.
InChI:InChI=1/C14H11NO2/c16-14-12-8-4-5-9-13(12)17-10-15(14)11-6-2-1-3-7-11/h1-9H,10H2
20978-96-5Relevant articles and documents
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/