604-58-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 604-58-0 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,0 and 4 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 604-58:
(5*6)+(4*0)+(3*4)+(2*5)+(1*8)=60
60 % 10 = 0
So 604-58-0 is a valid CAS Registry Number.
InChI:InChI=1/C25H22O3/c1-25-14-13-20-19-10-8-18(28-24(27)16-5-3-2-4-6-16)15-17(19)7-9-21(20)22(25)11-12-23(25)26/h2-10,15,22H,11-14H2,1H3/t22-,25-/m0/s1
604-58-0Relevant articles and documents
B-ring aromatization of estrogen derivatives
Hylarides,Wilbur,Mettler Jr.
, p. 657 - 662 (2007/10/02)
A noval method of B-ring aromatization of steroid derivatives is reported. Addition of BrCl in methanol to a non-aromatic B-ring double bond results in a rapid double elimination generating the aromatic B-ring. This procedure represents an effective method for conversion of an equilin to an equilenin nucleus.