402564-15-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 402564-15-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,2,5,6 and 4 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 402564-15:
(8*4)+(7*0)+(6*2)+(5*5)+(4*6)+(3*4)+(2*1)+(1*5)=112
112 % 10 = 2
So 402564-15-2 is a valid CAS Registry Number.
402564-15-2Relevant academic research and scientific papers
Photochromic naphthopyrans
-
Page column 16, (2010/01/30)
Described are novel photochromic naphtho[1,2-b]pyran compounds having certain substituents at the 2 position of the pyran ring, certain substituents at the 5 and 6 positions and optionally at the 7, 8, 9 and 10-positions of the naphtho portion of the comp
