131916-19-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131916-19-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,1 and 6 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 131916-19:
(8*1)+(7*3)+(6*1)+(5*9)+(4*1)+(3*6)+(2*1)+(1*9)=113
113 % 10 = 3
So 131916-19-3 is a valid CAS Registry Number.
131916-19-3Relevant academic research and scientific papers
REACTION OF ISOCYANATES WITH PYRAZOL-5-ONES
Vostokov, I. A.,Vasyaeva, L. V.,Maricheva, G. A.,Trub, E. P.
, p. 884 - 886 (2007/10/02)
Treatment of mono- and diisocyanates with 3-methyl-4-alkyl(aryl)pyrazol-5-ones by heating in absolute dioxane gives the corresponding 1-carbamoylpyrazol-5-ones.Using PMR spectroscopy it has been shown that they exist in the 5-hydroxypyrazole form in DMSO,
