91667-67-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91667-67-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,6 and 7 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 91667-67:
(7*9)+(6*1)+(5*6)+(4*6)+(3*7)+(2*6)+(1*7)=163
163 % 10 = 3
So 91667-67-3 is a valid CAS Registry Number.
91667-67-3Relevant academic research and scientific papers
Annen, Klaus,Hofmeister, Helmut,Laurent, Henry,Seeger, Arne,Wiechert, Rudolf
, p. 1453 - 1456 (1984)
Reaction of readily available 11β-hydroxy-8β,9-epoxy-steroids with hydrogen fluoride-pyridine gave the corresponding 9,10-seco-derivatives in good yields.