56750-11-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56750-11-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,7,5 and 0 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 56750-11:
(7*5)+(6*6)+(5*7)+(4*5)+(3*0)+(2*1)+(1*1)=129
129 % 10 = 9
So 56750-11-9 is a valid CAS Registry Number.
56750-11-9Relevant articles and documents
Preparation of 2-(2H-Benzotriazol-2-yl)phenols by the Reduction of 2-phenols with Thiourea S,S-Dioxide
Tanimoto, Shigeo,Kamano, Takayoshi
, p. 647 - 649 (2007/10/02)
The reduction of 2-phenols 1 with thiourea S,S-dioxide and sodium hydroxide in a mixture of isopropyl alcohol and water at reflux provides 2-(2H-benzotriazol-2-yl)phenols 3 in excellent yields.