170801-23-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 170801-23-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,8,0 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 170801-23:
(8*1)+(7*7)+(6*0)+(5*8)+(4*0)+(3*1)+(2*2)+(1*3)=107
107 % 10 = 7
So 170801-23-7 is a valid CAS Registry Number.
170801-23-7Relevant articles and documents
SYNTHESIS OF PYRAZOLOPYRAZINES FROM 5-AMINO-4-NITROZOPYRAZOLES AND DIMETHYLPHENACYLSULFONIUM BROMIDES
Takahashi, Masahiko,Hatazaki, Masahiko
, p. 1667 - 1674 (2007/10/03)
Reaction of 1,3-disubstituted 5-amino-4-nitropyrazoles (1) with dimethylphenacylsulfonium bromides (2) in boiling pyridine gave 1,3,6-trisubstituted pyrazolopyrazine 4-oxides (4) and/or 1,3,6-trisubstituted pyrazolopyrazin-5(4H)-ones (5).
