502607-48-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 502607-48-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,2,6,0 and 7 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 502607-48:
(8*5)+(7*0)+(6*2)+(5*6)+(4*0)+(3*7)+(2*4)+(1*8)=119
119 % 10 = 9
So 502607-48-9 is a valid CAS Registry Number.
502607-48-9Relevant articles and documents
New straightforward synthesis of 2-amino-6-methyl-5-(pyridin-4-ylsulfanyl)- 3H-quinazolin-4-one
Chen, Wei-Min,Wan, Shan-He
, p. 53 - 61 (2007)
The synthesis of 2-amino-6-methyl-5-(pyridin-4-ylsulfanyl)-3H-quinazolin-4- one (1) was studied via three different synthetic routes starting from 4-bromo-5-methylisatin. The best route was established, which is a straightforward route via 2-guanidino-5-b