4780-55-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4780-55-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,8 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 4780-55:
(6*4)+(5*7)+(4*8)+(3*0)+(2*5)+(1*5)=106
106 % 10 = 6
So 4780-55-6 is a valid CAS Registry Number.
InChI:InChI=1/C23H30O4/c1-14(24)27-13-21(26)20-7-6-18-17-5-4-15-12-16(25)8-10-22(15,2)19(17)9-11-23(18,20)3/h9,12,17-18,20H,4-8,10-11,13H2,1-3H3/t17-,18-,20+,22-,23-/m0/s1
4780-55-6Relevant academic research and scientific papers
New Synthesis of the Corticosterone Side-Chain
Solyom, Sandor,Szilagyi, Katalin,Toldy, Lajos
, p. 153 - 160 (2007/10/02)
Condensation reactions between azlactone 2 and 17-ketosteroids 1 followed by opening of the azlactone ring with sodium methanolate yields methyl 20-benzoylamino-17(20)-pregnen-21-oates 6.Reduction of the ester and subsequent hydrolysis produce compounds with the corticosterone side-chain as well as a ring-closed product of new type.