33653-18-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33653-18-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,6,5 and 3 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 33653-18:
(7*3)+(6*3)+(5*6)+(4*5)+(3*3)+(2*1)+(1*8)=108
108 % 10 = 8
So 33653-18-8 is a valid CAS Registry Number.
33653-18-8Relevant academic research and scientific papers
Thiohydrazides and 1,3,4-Thiadiazoles by Hydrazinolysis of Dithiocarboxylic Esters
Thiel, W.,Mayer, R.
, p. 649 - 658 (2007/10/02)
The reaction of 1,1-dithiooxalicesters 1 and heteroaryldithiocarboxylic esters 2 with excess hydrazine yields stable thiohydrazides 3 and 4, respectively.If the hydrazinolysis is carried out with only 0.5 equivalent hydrazine 1,3,4-thiadiazoles 6 and 7, e
