139059-33-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139059-33-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,5 and 9 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 139059-33:
(8*1)+(7*3)+(6*9)+(5*0)+(4*5)+(3*9)+(2*3)+(1*3)=139
139 % 10 = 9
So 139059-33-9 is a valid CAS Registry Number.
139059-33-9Relevant academic research and scientific papers
N-[1-(benzotriazol-1-yl)alkyl]amides, versatile amidoalkylation reagents. Part 3. Syntheses of open-chain N-protected-hemithioaminals
Katritzky,Takahashi,Fan,Pernak
, p. 1147 - 1150 (2007/10/02)
N-[(1 -Benzotriazol-1-yl)alkyl]amides 1 react readily with a variety of thiols (both aliphatic and aromatic) and sodium sulfide under mild conditions to give N-acylhemithioaminals in good yields.
