1903-13-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1903-13-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,0 and 3 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1903-13:
(6*1)+(5*9)+(4*0)+(3*3)+(2*1)+(1*3)=65
65 % 10 = 5
So 1903-13-5 is a valid CAS Registry Number.
1903-13-5Relevant academic research and scientific papers
Loskutov
, p. 341 - 343 (1997)
The regioselectivity of reduction of 1-substituted anthraquinones to 1 - or 4-substituted anthrones is determined by both the nature of the substituent and the type of the reducing system used.
