18805-67-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18805-67-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,8,0 and 5 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 18805-67:
(7*1)+(6*8)+(5*8)+(4*0)+(3*5)+(2*6)+(1*7)=129
129 % 10 = 9
So 18805-67-9 is a valid CAS Registry Number.
18805-67-9Relevant articles and documents
Reference Data - Diacyl Acid Dihydrazides
Al-Talib, Mahmoud,Tashtoush, Hasan,Odeh, Nedal
, p. 1072 - 1075 (2007/10/02)
N,N'-Diacyl acid dihydrazides were prepared by the reaction of acid dihydrazides with two equivalents of acyl chlorides.The structure of these compounds were elucidated by 1H and 13C NMR spectroscopy.