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120231-99-4

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120231-99-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 120231-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,2,3 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 120231-99:
(8*1)+(7*2)+(6*0)+(5*2)+(4*3)+(3*1)+(2*9)+(1*9)=74
74 % 10 = 4
So 120231-99-4 is a valid CAS Registry Number.

120231-99-4Downstream Products

120231-99-4Relevant articles and documents

Sequencing cross-metathesis and non-metathesis reactions to rapidly access building blocks for synthesis

Sirasani, Gopal,Paul, Tapas,Andrade, Rodrigo B.

, p. 2197 - 2205 (2011)

The olefin cross-metathesis reaction has been sequenced with four common organic transformations in a one- or two-pot manner to rapidly access useful building blocks. Those reactions are: (1) phosphorus-based olefination (e.g., Wittig and Horner-Wadsworth-Emmons); (2) hydride reduction; (3) Evans propionate aldol reaction; (4) Brown allyl- and Roush crotyl-boration. The products of these reactions include stereodefined 2,4-dienoates, trans allylic alcohols, syn-propionate aldols, and chiral non-racemic homoallylic alcohols, respectively. Many of these intermediates have been carried further to natural products, demonstrating the utility of the methodology.

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