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156634-71-8

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156634-71-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156634-71-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,6,3 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 156634-71:
(8*1)+(7*5)+(6*6)+(5*6)+(4*3)+(3*4)+(2*7)+(1*1)=148
148 % 10 = 8
So 156634-71-8 is a valid CAS Registry Number.

156634-71-8Upstream product

156634-71-8Relevant articles and documents

Condensation of Brominated Products of o-Acetylbenzophenone with Several Primary Amines

Nan'ya, Seiko,Ishida, Hirofumi,Moiji, Ester J.,Butsugan, Yasuo,Bajji, Ashok C.

, p. 401 - 404 (2007/10/02)

2-Bromo-3-phenylinden-1-one 2 reacted with phenylthiourea to produce 2-phenylimino-8-phenylindenothiazole (heteropentalene) 4 in moderate yield and bis-substituted-indenyl sulfide 5 in low yield.Whereas, from the reaction of 2 with thiourea or its

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