49661-64-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 49661-64-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,6,6 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 49661-64:
(7*4)+(6*9)+(5*6)+(4*6)+(3*1)+(2*6)+(1*4)=155
155 % 10 = 5
So 49661-64-5 is a valid CAS Registry Number.
49661-64-5Relevant articles and documents
Reductive methylation/phosphorylation of 3,4-diazacyclopentadienone N-oxides with trimethyl phosphite
Freeman, Jeremiah P.,Guay, Marc E.
, p. 847 - 849 (2007/10/03)
Treatment of 2,5-diphenyl-3,4-diazacyclopentadienone 3-oxide and 3,4-dioxide with trimethyl phosphite results in N-deoxygenation and methylation and O-phosphorylation to produce dimethyl (1-methyl-3,5-diphenyl-4-pyrazolyl) phosphate.
