99557-54-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99557-54-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,5,5 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 99557-54:
(7*9)+(6*9)+(5*5)+(4*5)+(3*7)+(2*5)+(1*4)=197
197 % 10 = 7
So 99557-54-7 is a valid CAS Registry Number.
99557-54-7Relevant academic research and scientific papers
Tomioka, Hideo,Matsushita, Takeshi
, p. 399 - 400 (1997)
Irradiation of either o-hydroxphenyldiazomethane or benzofuranone in argon matrix at 10 K generates benzoxetene which is in photoequilibrium with o-quinone methide.
