130793-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 130793-05-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,7,9 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 130793-05:
(8*1)+(7*3)+(6*0)+(5*7)+(4*9)+(3*3)+(2*0)+(1*5)=114
114 % 10 = 4
So 130793-05-4 is a valid CAS Registry Number.
130793-05-4Relevant articles and documents
NOVEL 2-METHYL-1-OXACEPHALOSPORINS 2. SYNTHESIS OF 3-SUBSTITUTED 2-METHY-1-OXACEPHEM NUCLEUS
Okonogi, Tsuneo,Shibahara, Seiji,Murai, Yasushi,Inouye, Sigeharu,Kondo, Shinichi,Christensen, Burton G.
, p. 797 - 802 (2007/10/02)
The stereoselective syntheses of 3-substituted 2α- and 2β-methyl-1-oxacephems have been achieved through the intramolecular Wittig condensation of 4-(1-methylpropoxy)azetidinones.