77976-72-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77976-72-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,7 and 6 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77976-72:
(7*7)+(6*7)+(5*9)+(4*7)+(3*6)+(2*7)+(1*2)=198
198 % 10 = 8
So 77976-72-8 is a valid CAS Registry Number.
77976-72-8Relevant articles and documents
Derivatives of 2-Methylenepenam: Analogues of Clavulanic Acid
Brain, Edward G.,Broom, Nigel J. P.,Hickling, Roger I.
, p. 892 - 896 (2007/10/02)
Some substituted 2-methylenepenams have been synthesised by ring closure of acetylenic azetidinone-thiols.Substituents on the methylene group include aryl, hydroxymethyl, and alkoxycarbonylvinyl.
