256220-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256220-40-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,2,2 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 256220-40:
(8*2)+(7*5)+(6*6)+(5*2)+(4*2)+(3*0)+(2*4)+(1*0)=113
113 % 10 = 3
So 256220-40-3 is a valid CAS Registry Number.
256220-40-3Relevant articles and documents
Synthesis of methyl (S)-(-)-6,8-dihydroxyoctanoate as a precursor of (R)-(+)-α-lipoic acid
Ganaha, Makoto,Yamauchi, Satoshi,Kinoshita, Yoshiro
, p. 2025 - 2027 (1999)
The synthesis of methyl (S)-(-)-6,8-dihydroxyoctanoate as a precursor of (R)-(+)-α-lipoic acid was accomplished by using methyl (S)-(-)-(2-oxocyclohexyl)acetate, which had been obtained from baker's yeast reduction, as a chiral starting material.
