164720-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 164720-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,4,7,2 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 164720-99:
(8*1)+(7*6)+(6*4)+(5*7)+(4*2)+(3*0)+(2*9)+(1*9)=144
144 % 10 = 4
So 164720-99-4 is a valid CAS Registry Number.
164720-99-4Relevant articles and documents
Substituted pyridines, their preparation, and their use as pesticides and fungicides
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, (2008/06/13)
The invention relates to compounds of the formula STR1 in which R1, R2, R3 and R4 are H, halogen, an aliphatic radical or an aromatic radical, X is O, S or optionally substituted imino, Y is a bond or an optiona