155688-81-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155688-81-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,6,8 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 155688-81:
(8*1)+(7*5)+(6*5)+(5*6)+(4*8)+(3*8)+(2*8)+(1*1)=176
176 % 10 = 6
So 155688-81-6 is a valid CAS Registry Number.
155688-81-6Relevant articles and documents
The preparation of N-acetylpyrazoles and their behavior toward alcohols
Kashima,Harada,Kita,Fukuchi,Hosomi
, p. 61 - 65 (2007/10/02)
According to four different methods, various types of n-acylpyrazoles were prepared from the corresponding pyrazoles and carboxylic acids or their acid chlorides. Although A-acylpyrazoles were inert to alcohols under neutral or weakly basic conditions, th