154221-23-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 154221-23-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,4,2,2 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 154221-23:
(8*1)+(7*5)+(6*4)+(5*2)+(4*2)+(3*1)+(2*2)+(1*3)=95
95 % 10 = 5
So 154221-23-5 is a valid CAS Registry Number.
154221-23-5Relevant articles and documents
Highly Diastereoselective Synthesis of (-)-Petasinecine via Ireland-Claisen-Type Rearrangement
Mulzer, Johann,Shanyoor, Mazin
, p. 6545 - 6548 (2007/10/02)
A Highly diastereoselective synthesis of petasinecine from L-proline via an Ireland-Claisen-type rearrangement (5->7; Scheme 1) is described.Keywords: necine base, petasinecine, L-proline, Ireland-Claisen-type rearrangement