42541-67-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42541-67-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,4 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 42541-67:
(7*4)+(6*2)+(5*5)+(4*4)+(3*1)+(2*6)+(1*7)=103
103 % 10 = 3
So 42541-67-3 is a valid CAS Registry Number.
42541-67-3Relevant articles and documents
Conversion of Torgov's synthesis of estrone into a highly enantioselective and efficient process
Yeung, Ying-Yeung,Chein, Rong-Jie,Corey
, p. 10346 - 10347 (2008/03/12)
A very direct and efficient conversion of the achiral Torgov diketone into the natural form of O-methyl estrone is described. Copyright