99538-69-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99538-69-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,5,3 and 8 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 99538-69:
(7*9)+(6*9)+(5*5)+(4*3)+(3*8)+(2*6)+(1*9)=199
199 % 10 = 9
So 99538-69-9 is a valid CAS Registry Number.
99538-69-9Relevant academic research and scientific papers
TRANSFORMATION OF SPIROCHROMENE)-3,9'-XANTHENES> INTO 9-(2-NAPHTHOFURYL)XANTHENES
Dmitrieva, N. D.,Liberzon, R. M.,Ryabokobylko, Yu. S.
, p. 1219 - 1223 (2007/10/02)
During the dehydrogenation of spirochromene)-3,9'-xanthenes> with sulfur 9-(2-naphthofuryl)xanthenes were obtained as a result, evidently, of secondary transformations in the spiropyrans formed during the reactions.
