77243-37-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77243-37-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,2,4 and 3 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77243-37:
(7*7)+(6*7)+(5*2)+(4*4)+(3*3)+(2*3)+(1*7)=139
139 % 10 = 9
So 77243-37-9 is a valid CAS Registry Number.
77243-37-9Relevant academic research and scientific papers
Stereoselective Routes to 14,15,17-Trisubstituted-3-methoxyestra-1,3,5(10)-trienes
Bull, James R.,Floor, Jan
, p. 437 - 446 (2007/10/02)
An approach to the synthesis of estra-1,3,5(10),8(14)-tetraen-15-one derivatives, based upon stereoselective introduction of functionality into the 14- and 15-positions of Δ14-compounds derived from estrone, is examined.Osmium tetraoxide hydrox
