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246855-94-7

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246855-94-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 246855-94-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,6,8,5 and 5 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 246855-94:
(8*2)+(7*4)+(6*6)+(5*8)+(4*5)+(3*5)+(2*9)+(1*4)=177
177 % 10 = 7
So 246855-94-7 is a valid CAS Registry Number.

246855-94-7Upstream product

246855-94-7Downstream Products

246855-94-7Relevant articles and documents

Enantioselective catabolism of racemic serine: Preparation of d-serine using whole cells of Fusobacterium nucleatum

Ramezani, Mohammad,White, Robert L.

, p. 1473 - 1478 (2011)

Incubation of racemic serine with the anaerobic bacterium Fusobacterium nucleatum yielded d-serine in high enantiomeric excess (>95%). Selective degradation of the l-amino acid was most efficient when F. nucleatum was resuspended in a buffer at high cell densities (ca. 50-100 g damp cells/L); a single incubation effectively removed almost all l-serine from racemic mixtures at initial concentrations up to 800 mM, the solubility limit. The product d-amino acid was separated from the metabolic end-products (acetate, butyrate and lactate) and buffer components by a single cation-exchange step. After recrystallization, 83% of the d-serine in the initial racemate was recovered with >99% ee (HPLC) and 98% purity (HPLC). This anaerobic microbial approach provides a viable complementary method for generating d-serine, a valuable chiral starting material for chemical synthesis.

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