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336628-49-0

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336628-49-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 336628-49-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,6,6,2 and 8 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 336628-49:
(8*3)+(7*3)+(6*6)+(5*6)+(4*2)+(3*8)+(2*4)+(1*9)=160
160 % 10 = 0
So 336628-49-0 is a valid CAS Registry Number.

336628-49-0Relevant articles and documents

A three-step synthesis of optically active 5-halomethyl-2-oxazolidinones; asymmetric desymmetrization of prochiral 1,3-dihalo-2-propyl carbamates

Sugiyama, Shigeo,Morishita, Kenji,Ishii, Keitaro

, p. 353 - 364 (2007/10/03)

Optically active 5-bromomethyl-2-oxazolidinones (2a and 3a) and 5-chloromethyl-2-oxazolidinones (2b and 3b) were readily prepared from prochiral 1,3-dibromo-2-propanol (7a) and 1,3-dichloro-2-propanol (7b) by a three-step sequence involving formation of carbamates (6a-c) followed by asymmetric desymmetrization (up to 50% de) and debenzylation by anisole-methanesulfonic acid system.

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