21397-28-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21397-28-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,9 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21397-28:
(7*2)+(6*1)+(5*3)+(4*9)+(3*7)+(2*2)+(1*8)=104
104 % 10 = 4
So 21397-28-4 is a valid CAS Registry Number.
21397-28-4Relevant academic research and scientific papers
Synthesis and NMR Spectra of Diazadiphosphetidines, II
Fluck, Ekkehard,Wachtler, Dieter
, p. 1651 - 1658 (2007/10/02)
1,3,2λ5,4λ5-Diazadiphosphetidines are synthesized from PCl5 and aniline derivatives.They are partially or fully dissociated in solution to give substituted (phenylimido)phosphoric trichlorides.The dependence of the dissociation on th
