145472-97-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 145472-97-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,5,4,7 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 145472-97:
(8*1)+(7*4)+(6*5)+(5*4)+(4*7)+(3*2)+(2*9)+(1*7)=145
145 % 10 = 5
So 145472-97-5 is a valid CAS Registry Number.
145472-97-5Relevant articles and documents
Synthetic approaches toward total synthesis of 12β-methyl- and 12-methylene-19-norpregnanes
Broess,Van Vliet,Groen,Hamersma
, p. 514 - 521 (2007/10/02)
The effect of a substituent in the 12-position of progestagens was studied. To this end, various approaches toward the preparation of 12β-alkyl- and 12-alkylidenenorpregnanes were investigated. Eventually, the desired compounds 17β-hydroxy-12β-methyl-18a-
