256947-56-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256947-56-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,9,4 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 256947-56:
(8*2)+(7*5)+(6*6)+(5*9)+(4*4)+(3*7)+(2*5)+(1*6)=185
185 % 10 = 5
So 256947-56-5 is a valid CAS Registry Number.
256947-56-5Relevant articles and documents
Synthesis and reaction of N-sulfenylpyrroles
Shimizu, Masao,Kato, Daisuke,Ando, Wataru,Konakahara, Takeo
, p. 1380 - 1381 (2015)
N-Sulfenylpyrroles were synthesized by the condensation of N-unsubstituted sulfenamides with 1,4-dicarbonyl compounds, such as hexane-2,5-dione or 2,5-dimethoxytetrahydrofuran. Primary amines as nucleophiles did not attack to the sulfur atom of the N-S bo