77924-41-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77924-41-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,2 and 4 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 77924-41:
(7*7)+(6*7)+(5*9)+(4*2)+(3*4)+(2*4)+(1*1)=165
165 % 10 = 5
So 77924-41-5 is a valid CAS Registry Number.
77924-41-5Relevant academic research and scientific papers
A SHORT SYNTHESIS OF THE Δ1-CARBOPENEM RING SYSTEM
Venugopalan, B.,Hamlet, A. Bevin,Durst, Tony
, p. 191 - 194 (2007/10/02)
Michael addition of N-lithio-4-vinyl-azetidin-2-one to several vinyl phosphonates gave adducts which were converted to Δ1-carbopenems via ozonolysis and an intramolecular Horner-Wittig reaction.
