304432-41-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 304432-41-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,4,4,3 and 2 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 304432-41:
(8*3)+(7*0)+(6*4)+(5*4)+(4*3)+(3*2)+(2*4)+(1*1)=95
95 % 10 = 5
So 304432-41-5 is a valid CAS Registry Number.
304432-41-5Relevant academic research and scientific papers
An efficient synthesis of 11β-(4-aminophenyl)spiro[estr-4-ene-17β,2'(5'H)-furan]-3,5'-dione
Geisler,Cleve,Harre
, p. 6489 - 6492 (2007/10/03)
An efficient synthesis has been developed affording 11β-(4-aminophenyl)spiro[estr-4-ene-17β,2'(5'H)-furan]-3,5'-dione (2), main metabolite of antiprogestin (Z)- 11β-[4-(dimethylamino)phenyl] - 17β-hydroxy- 17α-(3-hydroxyprop- 1-enyl)estr-4-en-3-one (1), i
