137250-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137250-56-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,5 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 137250-56:
(8*1)+(7*3)+(6*7)+(5*2)+(4*5)+(3*0)+(2*5)+(1*6)=117
117 % 10 = 7
So 137250-56-7 is a valid CAS Registry Number.
137250-56-7Relevant academic research and scientific papers
Anionic 3,4-diaza[3,3]sigmatropic rearrangements of N,N′-diacylhydrazines
Endo, Yasuyuki,Shudo, Koichi
, p. 4517 - 4520 (2007/10/02)
N,N′-Diacylhydrazines rearrange under basic conditions to afford 1,2-disubstituted succinamides. The rearrangement can be rationalized in terms of [3,3]sigmatropic shifts of biscarboxamide enolates.
