19717-45-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19717-45-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,1 and 7 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 19717-45:
(7*1)+(6*9)+(5*7)+(4*1)+(3*7)+(2*4)+(1*5)=134
134 % 10 = 4
So 19717-45-4 is a valid CAS Registry Number.
19717-45-4Relevant articles and documents
Tin-mediated reduction of azoarenes to hydrazoarenes using hydrazine hydrate
Dinesh,Abiraj,Srinivasa,Gowda, D. Channe
, p. 422 - 423 (2007/10/03)
The controlled reduction of azoarenes to the corresponding hydrazoarenes using tin and hydrazine hydrate is reported. The reduction proceeds smoothly at room temperature furnishing the hydrazoarene in excellent yield without the formation of an aniline.
