145471-52-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 145471-52-9 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 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 145471-52:
(8*1)+(7*4)+(6*5)+(5*4)+(4*7)+(3*1)+(2*5)+(1*2)=129
129 % 10 = 9
So 145471-52-9 is a valid CAS Registry Number.
145471-52-9Relevant articles and documents
New approaches to Corynanthe alkaloids involving the conjugate addition of dialkyl malonates to unsaturated thiolactams: Synthesis of (±)-3-epi-dihydrocorynantheol
Gomez-Pardo,Desmaele,D'Angelo
, p. 6633 - 6636 (1992)
Addition of dimethyl malonate to thiolactam 8 led to a mixture of Michael adducts 9 and 10 (6:1, respectively). Compound 9 has been converted in 4 steps into (±)-3-epi-dihydrocorynantheol 16.
