51637-76-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 51637-76-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,6,3 and 7 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 51637-76:
(7*5)+(6*1)+(5*6)+(4*3)+(3*7)+(2*7)+(1*6)=124
124 % 10 = 4
So 51637-76-4 is a valid CAS Registry Number.
51637-76-4Relevant academic research and scientific papers
Acylation and Cyclization of N-Hydroxyisoureas by Phenyl Isocyanate
Neitzel, Michael,Zinner, Gerwalt
, p. 10 - 18 (2007/10/02)
On adding phenyl isocyanate to the N-hydroxyisoureas 1 the O-carbamoyl derivatives 4 are obtained.They can undergo ring closure to yield Δ2-1,2,4-oxadiazolin-5-one (5a), the 3-imino-1,2,4-oxadiazolidin-5-ones 5b-5e or Δ3-1,2,4-oxadia
