135587-40-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135587-40-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,5,8 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 135587-40:
(8*1)+(7*3)+(6*5)+(5*5)+(4*8)+(3*7)+(2*4)+(1*0)=145
145 % 10 = 5
So 135587-40-5 is a valid CAS Registry Number.
135587-40-5Relevant articles and documents
SYNTHESIS OF 5-AMINO-4-CYANOPYRAZOLES VIA RING OPENING-RING CLOSURE OF 5-AZIDO-4-IMINOMETHYLPYRAZOLES. ISOLATION OF THE INTERMEDIATE
Dehaen, Wim,Becher, Jan
, p. 3565 - 3568 (2007/10/02)
5-Amino-4-cyanopyrazoles are prepared by thermolysis from 5-azido-4-iminomethylpyrazoles in fair yields.The reaction occurs via a ring opening-ring closure mechanism.The intermediate azocompound was isolated.