5323-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5323-23-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,3,2 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 5323-23:
(6*5)+(5*3)+(4*2)+(3*3)+(2*2)+(1*3)=69
69 % 10 = 9
So 5323-23-9 is a valid CAS Registry Number.
5323-23-9Relevant academic research and scientific papers
SYNTHESIS OF 17&α-HYDROXY STEROIDS: B-NOREPITESTOSTERONE
Kasal, Alexander
, p. 2202 - 2210 (2007/10/02)
The key intermediate VI was prepared by two ways: by B ring contraction of an androst-5-ene-3β,17α-diol derivative I and by configurational inversion of the 17β-hydroxy group in a N-norandrost-5-ene-3β,17β-diol derivative XII.B-Norepitestosterone (IX) and
