18290-31-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18290-31-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,2,9 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18290-31:
(7*1)+(6*8)+(5*2)+(4*9)+(3*0)+(2*3)+(1*1)=108
108 % 10 = 8
So 18290-31-8 is a valid CAS Registry Number.
InChI:InChI=1/C23H30O3/c1-4-22-12-10-19-18-9-7-17(25)14-16(18)6-8-20(19)21(22)11-13-23(22,5-2)26-15(3)24/h2,14,18-21H,4,6-13H2,1,3H3/t18-,19+,20+,21-,22-,23?/m0/s1
18290-31-8Relevant articles and documents
Synthesis of 13-alkyl-gon-4-ones
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, (2008/06/13)
The preparation of 13-methylgon-4-enes and novel 13-polycarbonalkylgon-4-enes by a new total synthesis is described. 13-Alkylgon-4-enes having progestational, anabolic and androgenic activities are prepared by forming a tetracylic gonane structure unsaturated in the 1,3,5(10),9(11) and 14-positions, selectively reducing in the B- and C-rings, and converting the aromatic A-ring compounds so-produced to gon-4-enes by Birch reduction and hydrolysis.
