128967-53-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128967-53-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,6 and 7 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128967-53:
(8*1)+(7*2)+(6*8)+(5*9)+(4*6)+(3*7)+(2*5)+(1*3)=173
173 % 10 = 3
So 128967-53-3 is a valid CAS Registry Number.
128967-53-3Relevant academic research and scientific papers
About the Reaction of "Pyrazolone Blue" with Diazomethane
Hennig, L.,Haessner, R.,Rissanen, K.
, p. 584 - 590 (2007/10/02)
The reaction of "pyrazolone blue" with diazomethane was investigated.A pyridazinone derivative 3, a heterocyclic spiro-cyclopropyl product 4 and a compound 7, which contains three pyrazolone and two diazomethane entities, are formed. 3 reacts with an exce
