63012-75-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 63012-75-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,3,0,1 and 2 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 63012-75:
(7*6)+(6*3)+(5*0)+(4*1)+(3*2)+(2*7)+(1*5)=89
89 % 10 = 9
So 63012-75-9 is a valid CAS Registry Number.
63012-75-9Relevant articles and documents
Synthesis of new heterocondensed pteridines
Chowdhury,Shibata,Morita,Kaya,Hiratani
, p. 1173 - 1177 (2001)
Reaction of 2-aminopyrazine 1 with isothiocyanate, isocyanate or dithioketal reagent furnished pteridines 3,4 in good yield. Thioxo compound 3a was chlorinated, methylated and subsequently displaced by amines. A simple one-step synthesis of heterocondense