Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 1H,3H-Naphtho[1,8-cd]thiopyran
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

203-85-0

203-85-0 structure

203-85-0 structure

Name: 1H,3H-Naphtho[1,8-cd]thiopyran
Chemical Name: 1,3-Dihydro-2-thiaphenalene
CAS Number: 203-85-0
Molecular Formula: C₁₂H₁₀S
Molecular Weight: 186.27300
Create Date: 2018-11-28 11:31:36
Modify Date: 2024-01-09 22:22:44

Name	1,3-Dihydro-2-thiaphenalene
Synonyms	1H.3H-Naphtho<1.8>thiopyran 2H,6H-naphtho<1,8-cd>thiin 1.3-Dihydro-2-thiophenalen 1H,3H-Naphtho(1,8-cd)thiopyran 1H.3H-Naphtho<1.8>thiapyran 1H,8-cd]thiopyran

Density	1.224g/cm3
Boiling Point	372.4ºC at 760mmHg
Molecular Formula	C₁₂H₁₀S
Molecular Weight	186.27300
Flash Point	181.3ºC
Exact Mass	186.05000
PSA	25.30000
LogP	3.58660
Vapour Pressure	2.06E-05mmHg at 25°C
Index of Refraction	1.715

HS Code	2930909090

2025-95-8 structure

2025-95-8

~94%

203-85-0 structure

203-85-0

Literature: Bieniarz; Cornwell Tetrahedron Letters, 1993 , vol. 34, # 6 p. 939 - 942

2026-08-6 structure

2026-08-6

~%

203-85-0 structure

203-85-0

203-84-9 structure

203-84-9

Literature: Nakayama, Juzo; Ohshima, Etsuo; Ishii, Akihiko; Hoshino, Masamatsu Journal of Organic Chemistry, 1983 , vol. 48, # 1 p. 60 - 65

Precursor 2
2025-95-8 2026-08-6
DownStream 2
208-96-8 14209-08-6

HS Code	2930909090
Summary	2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

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