136307-98-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136307-98-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,3,0 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 136307-98:
(8*1)+(7*3)+(6*6)+(5*3)+(4*0)+(3*7)+(2*9)+(1*8)=127
127 % 10 = 7
So 136307-98-7 is a valid CAS Registry Number.
136307-98-7Relevant articles and documents
The synthesis of angularly fused aromatic ring systems. The synthesis of 3-deoxyrabelomycin
Kraus,Wu
, p. 3803 - 3806 (1991)
3-deoxyrabelomycin was synthesized from the electron-deficient naphthoquinone 21 in four steps in 17% overall yield. The angularly-fused ring system was made by the conjugate addition of 5-methylcyclohexane-1,3-dione to 21 followed by methylation and base-induced cyclization.