67780-31-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67780-31-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,7,8 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 67780-31:
(7*6)+(6*7)+(5*7)+(4*8)+(3*0)+(2*3)+(1*1)=158
158 % 10 = 8
So 67780-31-8 is a valid CAS Registry Number.
67780-31-8Relevant 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
