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133124-91-1

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133124-91-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133124-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,1,2 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 133124-91:
(8*1)+(7*3)+(6*3)+(5*1)+(4*2)+(3*4)+(2*9)+(1*1)=91
91 % 10 = 1
So 133124-91-1 is a valid CAS Registry Number.

133124-91-1Relevant articles and documents

Asymmetric synthesis of α-methylene-γ-butyrolactones fused to carbocyclic rings via the Hosomi reaction of chiral allylsilanes

Nishitani, Kiyoshi,Yamakawa, Koji

, p. 387 - 390 (2007/10/02)

Optically active α-methylene-γ-butyrolactones fused to five or six-membered carbocyclic ring were synthesized in 64-92% enantiomeric excess using the intramolecular Hosomi reaction of ω-formylated β-(chiral)alkoxycarbonylallylsilanes.

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