Cas 1257651-65-2,C22H28N2OS

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Check Digit Verification of cas no

The CAS Registry Mumber 1257651-65-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,6,5 and 1 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1257651-65:
(9*1)+(8*2)+(7*5)+(6*7)+(5*6)+(4*5)+(3*1)+(2*6)+(1*5)=172
172 % 10 = 2
So 1257651-65-2 is a valid CAS Registry Number.

1257651-65-2Upstream product

1257651-66-3 C₂₇H₃₆N₂O₃S

1257651-65-2Downstream Products

1257651-65-2Relevant academic research and scientific papers

Highly efficient direct asymmetric aldol reactions catalyzed by a prolinethioamide derivative in aqueous media

Wang, Bing,Liu, Xin-Wang,Liu, Ling-Yan,Chang, Wei-Xing,Li, Jing

supporting information; experimental part, p. 5951 - 5954 (2011/02/26)

L-Prolinethioamide derivative 1c, prepared from the readily available natural amino acids L-proline and L-valine, was studied for the direct asymmetric aldol reaction of acetone with various aromatic aldehydes at 0 °C or room temperature. A loading of onl

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