131973-00-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131973-00-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,7 and 3 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 131973-00:
(8*1)+(7*3)+(6*1)+(5*9)+(4*7)+(3*3)+(2*0)+(1*0)=117
117 % 10 = 7
So 131973-00-7 is a valid CAS Registry Number.
131973-00-7Relevant academic research and scientific papers
Synthesis of 4- and 16α-hydroxylated equine estrogens
Ikegawa, Shigeo,Kurosawa, Takao,Tohma, Masahiko
, p. 250 - 255 (2007/10/02)
4-Hydroxyequilin, 4-hydroxyequilenin, and 16α-hydroxyequilenin were synthesized as authentic specimens for the metabolic studies of equine estrogens.The synthetic route leading to the 4-hydroxylated compounds was started from o-vanillin, which was transfo
